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Molecular diffusion, often called simply diffusion, is the thermal motion of all (liquid or gas) particles at temperatures above absolute zero. The rate of this movement is a function of temperature, viscosity of the fluid and the size (mass) of the particles. Diffusion explains the net flux of molecules from a region of higher concentration to one of lower concentration, but it is important to note that diffusion also occurs when there is no concentration gradient. The result of diffusion is a gradual mixing of material. In a phase with uniform temperature, absent external net forces acting on the particles, the diffusion process will eventually result in complete mixing.
Diffusive equilibrium is reached when the concentrations of the diffusing substance in the two compartments becomes equal.
Consider two systems; S1 and S2 at the same temperature and capable of exchanging particles. If there is a change in the potential energy of a system; for example μ1>μ2 (μ is Chemical potential) an energy flow will occur from S1 to S2, because nature always prefers low energy and maximum entropy.
This page contains text from Wikipedia, the Free Encyclopedia -
http://en.wikipedia.org/wiki/Molecular_diffusion
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
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24 Kinetic Molecular Theory & Diffusion
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What is diffusion?
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- Ear clearing
- Edward D. Thalmann
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- Hydrogen narcosis
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- Ideal gas law
- Immersion diuresis
- Isotopic labeling
- Jacques Triger
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- Lung
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- Mass flux
- Mass transfer
- Metabolism
- Molecular diffusion
- Molecule
- Neutral buoyancy
- Nitrogen narcosis
- NMR
- Normocapnia
- Osmosis
- Oxygen
- Oxygen therapy
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- Partial pressure
- Paul Bert
- Perfusion
- Permeation
- Phase (matter)
- Potential energy
- Powder metallurgy
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- Rubicon Foundation
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24 Kinetic Molecular Theory & Diffusion
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10.8 Molecular Effusion and Diffusion
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CHE 246 G18: Molecular Diffusion in Gases
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What Effect Does Solute Molecular Weight Have on Diffusion Rate? : Chemistry Lessons
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We take some water in a petri dish and add some lead nitrate and potassium iodide to opposite ends of the dish as shown. After a while, we see that a yellow line appears in the centre of the dish, neatly dividing the dish into two parts. This is the precipitate of lead iodide that is formed due to the reaction of the two salts. The salts dissolve in water and the ions are diffused in the solution. As the ions move away from areas of high concentration to areas of low concentration, they meet each other and react to produce the yellow lead iodide precipitate in the centre of the dish. -
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24 Kinetic Molecular Theory & Diffusion
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- Updated: 22 Mar 2013
- author: Johnathan Chase
http://wn.com/24_Kinetic_Molecular_Theory_&_Diffusion
10.8 Molecular Effusion and Diffusion
- Duration: 6:13
- Updated: 05 Mar 2014
- author: FusChemistryVideos
The content of this video is designed to accompany the 12th edition of "Chemistry The Central Science" by Brown, Lemay, Bursten, Murphy, and Woodward. The ti...
http://wn.com/10.8_Molecular_Effusion_and_Diffusion
The content of this video is designed to accompany the 12th edition of "Chemistry The Central Science" by Brown, Lemay, Bursten, Murphy, and Woodward. The ti...
- published: 28 Jul 2012
- views: 1721
- author: FusChemistryVideos
Mod-01 Lec-02 Molecular Diffusion
- Duration: 52:22
- Updated: 01 Sep 2014
- author: nptelhrd
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http://wn.com/Mod-01_Lec-02_Molecular_Diffusion
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT Guwahati. For more details on NPTEL visit http://nptel.iitm.ac.in.
- published: 11 Oct 2013
- views: 2156
- author: nptelhrd
Molecular diffusion
- Duration: 0:15
- Updated: 18 Mar 2014
- author: Ignacio Sepulveda
Timemeter: Minutes:Second:Centiseconds. Paper graduated in milimeters.
http://wn.com/Molecular_diffusion
Timemeter: Minutes:Second:Centiseconds. Paper graduated in milimeters.
- published: 31 Aug 2013
- views: 92
- author: Ignacio Sepulveda
molecular diffusion
- Duration: 0:26
- Updated: 16 Feb 2015
simulation of molecular diffusion to an affinity bead, showin the chemoattraction effect.
http://wn.com/molecular_diffusion
simulation of molecular diffusion to an affinity bead, showin the chemoattraction effect.
- published: 16 Feb 2015
- views: 14
Mod-01 Lec-04 Steady state molecular diffusion in fluids Part I
- Duration: 44:59
- Updated: 24 Jul 2014
- author: nptelhrd
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT Guwahati. For more details on NPTEL visit http://nptel.iitm.ac.in.
http://wn.com/Mod-01_Lec-04_Steady_state_molecular_diffusion_in_fluids_Part_I
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT Guwahati. For more details on NPTEL visit http://nptel.iitm.ac.in.
- published: 11 Oct 2013
- views: 1194
- author: nptelhrd
CHE 246 G18: Molecular Diffusion in Gases
- Duration: 12:56
- Updated: 15 Jan 2015
Students:
Mohd Alif
Muhammad Farizwan
Nabil Imran
Muhammad Eiman
Lecturer:
Sharifah Iziuna
Faculty of Chemical Engineering
UiTM Pasir Gudang
http://wn.com/CHE_246_G18_Molecular_Diffusion_in_Gases
Students:
Mohd Alif
Muhammad Farizwan
Nabil Imran
Muhammad Eiman
Lecturer:
Sharifah Iziuna
Faculty of Chemical Engineering
UiTM Pasir Gudang
- published: 15 Jan 2015
- views: 151
What Effect Does Solute Molecular Weight Have on Diffusion Rate? : Chemistry Lessons
- Duration: 2:51
- Updated: 18 Jun 2014
- author: eHowEducation
Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch More: http://www.youtube.com/ehoweducation Diffusion rate will require...
http://wn.com/What_Effect_Does_Solute_Molecular_Weight_Have_on_Diffusion_Rate?_Chemistry_Lessons
Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch More: http://www.youtube.com/ehoweducation Diffusion rate will require...
- published: 08 Feb 2014
- views: 269
- author: eHowEducation
Mod-01 Lec-05 Steady state molecular diffusion in fluids Part II
- Duration: 42:52
- Updated: 24 Jul 2014
- author: nptelhrd
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http://wn.com/Mod-01_Lec-05_Steady_state_molecular_diffusion_in_fluids_Part_II
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- published: 11 Oct 2013
- views: 991
- author: nptelhrd
What is diffusion?
- Duration: 4:19
- Updated: 27 Oct 2014
Diffusion
The process of gradual mixing of two substances kept in contact is called diffusion. Whenever diffusion takes place molecules of one substance penetrates through the spaces between the molecules of the other substance to equalise the concentration of molecules in the two substances.
Diffusion take place in solids, liquids and gases. But it is faster in gases than in liquids. It is slow in solids. It is because of diffusion you are able to get a fragrances of the perfumes and the flowers.
Diffusion of a solid into a liquid
Drop crystals of potassium permanganate into a beaker containing water we observe that the crystals of potassium permanganate gradually intermingle with water to form a pink solution.
Diffusion of a liquid into a liquid
Take some saturated solution of copper sulphate in a tall beaker. Allow it to settle. With the help of the pipette add some water of the solution of the copper sulphate in such a way that water flows along the side of the beaker and forms a separate layer above the solution of copper sulphate cover the beaker and leave the undisturbed.
Initially water flow on the top of the copper sulphate solution as it is less dense. After a few hours we see that the blue copper sulphate solution becomes Pale blue in colour.
The colour becomes pale blue, as there is an intermingling of water molecules with the molecules of copper sulphate solution.
Diffusion in gases
Diffusion of Ammonia into Hydrogen Chloride
Let us see how diffusion of two gases takes place and under goes a chemical reaction.
Take a long glass tube and plug end a with cotton wool soaked in ammonia and end b with cotton wool soaked in hydro chloric acid seal the ends with the rubber buns.
What do you observe?
We observe a dense white cloud. The dense white cloud of ammonium chloride is formed due to the diffusion of ammonia in hydrogen chloride.
Diffusion of Bromine into air
Arrange gas jar containing Bromine and air as shown here. Remove the cover plate. What do you observe?
The brown coloured bromine gas rapidly spread into the jar containing air to produce uniform bromine air mixture of paid brown colour.
http://wn.com/What_is_diffusion?
Diffusion
The process of gradual mixing of two substances kept in contact is called diffusion. Whenever diffusion takes place molecules of one substance penetrates through the spaces between the molecules of the other substance to equalise the concentration of molecules in the two substances.
Diffusion take place in solids, liquids and gases. But it is faster in gases than in liquids. It is slow in solids. It is because of diffusion you are able to get a fragrances of the perfumes and the flowers.
Diffusion of a solid into a liquid
Drop crystals of potassium permanganate into a beaker containing water we observe that the crystals of potassium permanganate gradually intermingle with water to form a pink solution.
Diffusion of a liquid into a liquid
Take some saturated solution of copper sulphate in a tall beaker. Allow it to settle. With the help of the pipette add some water of the solution of the copper sulphate in such a way that water flows along the side of the beaker and forms a separate layer above the solution of copper sulphate cover the beaker and leave the undisturbed.
Initially water flow on the top of the copper sulphate solution as it is less dense. After a few hours we see that the blue copper sulphate solution becomes Pale blue in colour.
The colour becomes pale blue, as there is an intermingling of water molecules with the molecules of copper sulphate solution.
Diffusion in gases
Diffusion of Ammonia into Hydrogen Chloride
Let us see how diffusion of two gases takes place and under goes a chemical reaction.
Take a long glass tube and plug end a with cotton wool soaked in ammonia and end b with cotton wool soaked in hydro chloric acid seal the ends with the rubber buns.
What do you observe?
We observe a dense white cloud. The dense white cloud of ammonium chloride is formed due to the diffusion of ammonia in hydrogen chloride.
Diffusion of Bromine into air
Arrange gas jar containing Bromine and air as shown here. Remove the cover plate. What do you observe?
The brown coloured bromine gas rapidly spread into the jar containing air to produce uniform bromine air mixture of paid brown colour.
- published: 27 Oct 2014
- views: 2
Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16
- Duration: 11:26
- Updated: 06 Sep 2014
- author: CrashCourse
We have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry ...
http://wn.com/Passing_Gases_Effusion,_Diffusion_and_the_Velocity_of_a_Gas_-_Crash_Course_Chemistry_16
We have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry ...
- published: 04 Jun 2013
- views: 111919
- author: CrashCourse
BIO LAB EXERCISE E; SOLUTIONS, CONCENTRATION, DIFFUSION, OSMOSIS & TONICITY by Professor Fink
- Duration: 42:33
- Updated: 14 Jul 2014
- author: professorfink
In this video Professor Fink reviews the concepts of Solutions, Concentration, Diffusion across Cell Membranes, Osmosis & Tonicity. The lecture includes 4 fa...
http://wn.com/BIO_LAB_EXERCISE_E;_SOLUTIONS,_CONCENTRATION,_DIFFUSION,_OSMOSIS_&_TONICITY_by_Professor_Fink
In this video Professor Fink reviews the concepts of Solutions, Concentration, Diffusion across Cell Membranes, Osmosis & Tonicity. The lecture includes 4 fa...
- published: 18 Mar 2012
- views: 2616
- author: professorfink
L35 5 Calcs Molecular Speed and Diffusion
- Duration: 19:57
- Updated: 11 Nov 2014
Calculation of molecular speed and relative rates of diffusion and effusion (Graham's Law).
http://wn.com/L35_5_Calcs_Molecular_Speed_and_Diffusion
Calculation of molecular speed and relative rates of diffusion and effusion (Graham's Law).
- published: 11 Nov 2014
- views: 12
Chemistry 7.7 Diffusion Effusion and Graham's Law
- Duration: 4:18
- Updated: 22 Aug 2014
- author: IsaacsTEACH
This lesson discusses diffusion and effusion of gases. Also, why farts smell. We also show how to use Graham's Law to compared the rates of effusion of two d...
http://wn.com/Chemistry_7.7_Diffusion_Effusion_and_Graham's_Law
This lesson discusses diffusion and effusion of gases. Also, why farts smell. We also show how to use Graham's Law to compared the rates of effusion of two d...
- published: 18 Nov 2011
- views: 7964
- author: IsaacsTEACH
Phisiology Molecular diffusion
- Duration: 8:09
- Updated: 26 Jun 2014
- author: Marino Estrella
a video of the course of basic concepts of medicine, explaining the movement of micromolecules.
http://wn.com/Phisiology_Molecular_diffusion
a video of the course of basic concepts of medicine, explaining the movement of micromolecules.
- published: 08 Jun 2014
- views: 22
- author: Marino Estrella
![How Diffusion Works [HD Animation]](http://web.archive.org./web/20150511052046im_/http://i1.ytimg.com/vi/n5nubvwJJQM/0.jpg "How Diffusion Works [HD Animation]")
How Diffusion Works [HD Animation]
- Duration: 1:29
- Updated: 03 Mar 2014
See an organised list of all the animations: http://doctorprodigious.wordpress.com/hd-animations/
http://wn.com/How_Diffusion_Works_HD_Animation_
See an organised list of all the animations: http://doctorprodigious.wordpress.com/hd-animations/
- published: 03 Mar 2014
- views: 93
Kinetic Molecular Theory; Effusion & Diffusion
- Duration: 11:36
- Updated: 17 Oct 2013
- author: SentinelChemistry
Watch this before class on 10-17-2013 Make sure to use KMT to explain the relationships mentioned in the video, as well as having a guess at what happens in ...
http://wn.com/Kinetic_Molecular_Theory;_Effusion_&_Diffusion
Watch this before class on 10-17-2013 Make sure to use KMT to explain the relationships mentioned in the video, as well as having a guess at what happens in ...
- published: 16 Oct 2013
- views: 89
- author: SentinelChemistry
Diffusion - Coefficients and Non Steady State
- Duration: 23:28
- Updated: 21 Aug 2014
- author: Engineering and Design Solutions
A Materials Science lecture that introduces the calculations of Diffusion in solids. An introduction to the concepts is already assumed. The hurried nature o...
http://wn.com/Diffusion_-_Coefficients_and_Non_Steady_State
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- published: 26 Feb 2014
- views: 659
- author: Engineering and Design Solutions
Diffusion in liquids | Atoms and Molecules | Physics
- Duration: 1:38
- Updated: 05 Jan 2015
We take some water in a petri dish and add some lead nitrate and potassium iodide to opposite ends of the dish as shown. After a while, we see that a yellow line appears in the centre of the dish, neatly dividing the dish into two parts. This is the precipitate of lead iodide that is formed due to the reaction of the two salts. The salts dissolve in water and the ions are diffused in the solution. As the ions move away from areas of high concentration to areas of low concentration, they meet each other and react to produce the yellow lead iodide precipitate in the centre of the dish.
http://wn.com/Diffusion_in_liquids_|_Atoms_and_Molecules_|_Physics
We take some water in a petri dish and add some lead nitrate and potassium iodide to opposite ends of the dish as shown. After a while, we see that a yellow line appears in the centre of the dish, neatly dividing the dish into two parts. This is the precipitate of lead iodide that is formed due to the reaction of the two salts. The salts dissolve in water and the ions are diffused in the solution. As the ions move away from areas of high concentration to areas of low concentration, they meet each other and react to produce the yellow lead iodide precipitate in the centre of the dish.
- published: 05 Jan 2015
- views: 29
Sections 10 7 10 8 Kinetic Molecular Theory, Gas Effusion and Diffusion
- Duration: 35:58
- Updated: 16 Nov 2012
http://wn.com/Sections_10_7_10_8_Kinetic_Molecular_Theory,_Gas_Effusion_and_Diffusion
- published: 16 Nov 2012
- views: 204
Visualization award winner in Science - Nicotine addiction and molecule diffusion
- Duration: 3:47
- Updated: 24 Aug 2014
- author: rufjunk
The Nicotine molecules go through the lungs and into the bloodstream, before flooding nicotinic acetylcholine receptors near the ventral tegmental area. It b...
http://wn.com/Visualization_award_winner_in_Science_-_Nicotine_addiction_and_molecule_diffusion
The Nicotine molecules go through the lungs and into the bloodstream, before flooding nicotinic acetylcholine receptors near the ventral tegmental area. It b...
- published: 20 Apr 2008
- views: 73816
- author: rufjunk
Goalfinder what is relationship between molecular size and diffusion
- Duration: 2:04
- Updated: 16 Nov 2012
- author: Amit Kulshresth
http://www.goalfinder.com/product.asp?productid=127 Duration 6 minutes In an experiment, concentrated hydrogen chloride acid and aqueous ammonia solution is ...
http://wn.com/Goalfinder_what_is_relationship_between_molecular_size_and_diffusion
http://www.goalfinder.com/product.asp?productid=127 Duration 6 minutes In an experiment, concentrated hydrogen chloride acid and aqueous ammonia solution is ...
- published: 29 Feb 2012
- views: 142
- author: Amit Kulshresth
Diffusion: Steady State vs Transient
- Duration: 5:34
- Updated: 08 Oct 2014
Tutorial illustrating the concepts of steady state and transient diffusion.
http://wn.com/Diffusion_Steady_State_vs_Transient
Tutorial illustrating the concepts of steady state and transient diffusion.
- published: 08 Oct 2014
- views: 72
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6:15
24 Kinetic Molecular Theory & Diffusion
...
published: 20 Apr 2012
author: Johnathan Chase
24 Kinetic Molecular Theory & Diffusion
6:13
10.8 Molecular Effusion and Diffusion
The content of this video is designed to accompany the 12th edition of "Chemistry The Cent...
published: 28 Jul 2012
author: FusChemistryVideos
10.8 Molecular Effusion and Diffusion
10.8 Molecular Effusion and Diffusion
The content of this video is designed to accompany the 12th edition of "Chemistry The Central Science" by Brown, Lemay, Bursten, Murphy, and Woodward. The ti...- published: 28 Jul 2012
- views: 1721
- author: FusChemistryVideos
52:22
Mod-01 Lec-02 Molecular Diffusion
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT...
published: 11 Oct 2013
author: nptelhrd
Mod-01 Lec-02 Molecular Diffusion
Mod-01 Lec-02 Molecular Diffusion
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT Guwahati. For more details on NPTEL visit http://nptel.iitm.ac.in.- published: 11 Oct 2013
- views: 2156
- author: nptelhrd
0:15
Molecular diffusion
Timemeter: Minutes:Second:Centiseconds. Paper graduated in milimeters....
published: 31 Aug 2013
author: Ignacio Sepulveda
Molecular diffusion
Molecular diffusion
Timemeter: Minutes:Second:Centiseconds. Paper graduated in milimeters.- published: 31 Aug 2013
- views: 92
- author: Ignacio Sepulveda
0:26
molecular diffusion
simulation of molecular diffusion to an affinity bead, showin the chemoattraction effect....
published: 16 Feb 2015
molecular diffusion
molecular diffusion
simulation of molecular diffusion to an affinity bead, showin the chemoattraction effect.- published: 16 Feb 2015
- views: 14
44:59
Mod-01 Lec-04 Steady state molecular diffusion in fluids Part I
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT...
published: 11 Oct 2013
author: nptelhrd
Mod-01 Lec-04 Steady state molecular diffusion in fluids Part I
Mod-01 Lec-04 Steady state molecular diffusion in fluids Part I
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT Guwahati. For more details on NPTEL visit http://nptel.iitm.ac.in.- published: 11 Oct 2013
- views: 1194
- author: nptelhrd
12:56
CHE 246 G18: Molecular Diffusion in Gases
Students:
Mohd Alif
Muhammad Farizwan
Nabil Imran
Muhammad Eiman
Lecturer:
Sharifah Iziun...
published: 15 Jan 2015
CHE 246 G18: Molecular Diffusion in Gases
CHE 246 G18: Molecular Diffusion in Gases
Students: Mohd Alif Muhammad Farizwan Nabil Imran Muhammad Eiman Lecturer: Sharifah Iziuna Faculty of Chemical Engineering UiTM Pasir Gudang- published: 15 Jan 2015
- views: 151
2:51
What Effect Does Solute Molecular Weight Have on Diffusion Rate? : Chemistry Lessons
Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch Mor...
published: 08 Feb 2014
author: eHowEducation
What Effect Does Solute Molecular Weight Have on Diffusion Rate? : Chemistry Lessons
What Effect Does Solute Molecular Weight Have on Diffusion Rate? : Chemistry Lessons
Subscribe Now: http://www.youtube.com/subscription_center?add_user=ehoweducation Watch More: http://www.youtube.com/ehoweducation Diffusion rate will require...- published: 08 Feb 2014
- views: 269
- author: eHowEducation
42:52
Mod-01 Lec-05 Steady state molecular diffusion in fluids Part II
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT...
published: 11 Oct 2013
author: nptelhrd
Mod-01 Lec-05 Steady state molecular diffusion in fluids Part II
Mod-01 Lec-05 Steady state molecular diffusion in fluids Part II
Mass Transfer Operations I by Prof. Dr. B. Mandal, Department of Chemical Engineering, IIT Guwahati. For more details on NPTEL visit http://nptel.iitm.ac.in.- published: 11 Oct 2013
- views: 991
- author: nptelhrd
4:19
What is diffusion?
Diffusion
The process of gradual mixing of two substances kept in contact is called diffus...
published: 27 Oct 2014
What is diffusion?
What is diffusion?
Diffusion The process of gradual mixing of two substances kept in contact is called diffusion. Whenever diffusion takes place molecules of one substance penetrates through the spaces between the molecules of the other substance to equalise the concentration of molecules in the two substances. Diffusion take place in solids, liquids and gases. But it is faster in gases than in liquids. It is slow in solids. It is because of diffusion you are able to get a fragrances of the perfumes and the flowers. Diffusion of a solid into a liquid Drop crystals of potassium permanganate into a beaker containing water we observe that the crystals of potassium permanganate gradually intermingle with water to form a pink solution. Diffusion of a liquid into a liquid Take some saturated solution of copper sulphate in a tall beaker. Allow it to settle. With the help of the pipette add some water of the solution of the copper sulphate in such a way that water flows along the side of the beaker and forms a separate layer above the solution of copper sulphate cover the beaker and leave the undisturbed. Initially water flow on the top of the copper sulphate solution as it is less dense. After a few hours we see that the blue copper sulphate solution becomes Pale blue in colour. The colour becomes pale blue, as there is an intermingling of water molecules with the molecules of copper sulphate solution. Diffusion in gases Diffusion of Ammonia into Hydrogen Chloride Let us see how diffusion of two gases takes place and under goes a chemical reaction. Take a long glass tube and plug end a with cotton wool soaked in ammonia and end b with cotton wool soaked in hydro chloric acid seal the ends with the rubber buns. What do you observe? We observe a dense white cloud. The dense white cloud of ammonium chloride is formed due to the diffusion of ammonia in hydrogen chloride. Diffusion of Bromine into air Arrange gas jar containing Bromine and air as shown here. Remove the cover plate. What do you observe? The brown coloured bromine gas rapidly spread into the jar containing air to produce uniform bromine air mixture of paid brown colour.- published: 27 Oct 2014
- views: 2
11:26
Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16
We have learned over the past few weeks that gases have real-life constraints on how they ...
published: 04 Jun 2013
author: CrashCourse
Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16
Passing Gases: Effusion, Diffusion and the Velocity of a Gas - Crash Course Chemistry #16
We have learned over the past few weeks that gases have real-life constraints on how they move here in the non-ideal world. As with most things in chemistry ...- published: 04 Jun 2013
- views: 111919
- author: CrashCourse
42:33
BIO LAB EXERCISE E; SOLUTIONS, CONCENTRATION, DIFFUSION, OSMOSIS & TONICITY by Professor Fink
In this video Professor Fink reviews the concepts of Solutions, Concentration, Diffusion a...
published: 18 Mar 2012
author: professorfink
BIO LAB EXERCISE E; SOLUTIONS, CONCENTRATION, DIFFUSION, OSMOSIS & TONICITY by Professor Fink
BIO LAB EXERCISE E; SOLUTIONS, CONCENTRATION, DIFFUSION, OSMOSIS & TONICITY by Professor Fink
In this video Professor Fink reviews the concepts of Solutions, Concentration, Diffusion across Cell Membranes, Osmosis & Tonicity. The lecture includes 4 fa...- published: 18 Mar 2012
- views: 2616
- author: professorfink
19:57
L35 5 Calcs Molecular Speed and Diffusion
Calculation of molecular speed and relative rates of diffusion and effusion (Graham's Law)...
published: 11 Nov 2014
L35 5 Calcs Molecular Speed and Diffusion
L35 5 Calcs Molecular Speed and Diffusion
Calculation of molecular speed and relative rates of diffusion and effusion (Graham's Law).- published: 11 Nov 2014
- views: 12
4:18
Chemistry 7.7 Diffusion Effusion and Graham's Law
This lesson discusses diffusion and effusion of gases. Also, why farts smell. We also show...
published: 18 Nov 2011
author: IsaacsTEACH
Chemistry 7.7 Diffusion Effusion and Graham's Law
Chemistry 7.7 Diffusion Effusion and Graham's Law
This lesson discusses diffusion and effusion of gases. Also, why farts smell. We also show how to use Graham's Law to compared the rates of effusion of two d...- published: 18 Nov 2011
- views: 7964
- author: IsaacsTEACH
photo: UN Photo / Mark Garten
09 May 2015
(AhlulBayt News Agency) The United Nations says the Takfiri ISIL terrorist group has been offering Syrian and Iraqi girls for sale by putting them on show “stripped naked” in “slave bazaars.” ... Read the full story ›. Text smaller Text bigger. Note. Read our discussion guidelines before commenting ... ....
photo: AP / Patrick Semansky
09 May 2015
Article by WN.com Correspondent Dallas Darling. Mahatma Gandhi warned that the deadliest form of violence is poverty. But for Gandhi, poverty consisted of not only economic impoverishment but political, social, and cultural. It also included psychological, emotional, even spiritual, neglect and abandonment ... Such hallmarks of American society also inflict deadly violence on their victims ... Make no mistake ... Dallas Darling (darling@wn.com)....
photo: AP / Alexander Zemlianichenko
09 May 2015
Vladimir Putin has used an address commemorating the 70th anniversary of victory over Nazi Germany to accuse the US of attempting to dominate the world. Speaking at Moscow’s annual Victory Day parade in Red Square, which this year has been boycotted by western leaders over the continuing crisis in Ukraine, the Russian president berated Washington for “attempts to create a unipolar world” ... Guardian service ....
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PNAS
18 Feb 2015
Abstract ... Crystal structures of various PduA mutants provide a foundation for interpreting the observed biochemical and phenotypic data in terms of molecular diffusion across the shell ... ....
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PNAS
15 Jan 2015
Abstract. We report fluxes and dry deposition velocities for 16 atmospheric compounds above a southeastern United States forest, including ... The data suggest that dry deposition is the dominant daytime sink for small, saturated oxygenates ... To first order, the relative deposition velocities of water-soluble compounds are constrained by their molecular diffusivity ... ....
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PNAS
05 Sep 2014
To date, this exchange has been assumed to be limited by molecular diffusion through an unstirred boundary layer extending 1–2 mm from the coral surface, with corals relying solely on external flow to overcome this limitation....
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Yahoo Daily News
26 May 2014
Before I left for Houston to go on a weightless flight, I explained to my mother how the escape from gravity works. The plane flies a series of parabolas ... It climbs and drops over and over again — 30 times — creating short periods of weightlessness at the crest ... Caption ... Without gravity, flames burn more slowly and in an eerily spherical shape because they rely on the gradual process of molecular diffusion to feed oxygen to the flame....
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Space
08 Apr 2014
Led by engineering undergraduate Sam Avery, the student project manager a team from UC San Diego Engineering seeks to better define how combustible fluids burn in space, particularly biofuels. Credit. Rod Pyle / SPACE.com View full size image ... [Fun in Zero-G ... They burn at a more sluggish rate, relying on molecular diffusion to feed oxygen to the flame, which actually makes certain characteristics like combustion rate easier to study ... ....
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PNAS
21 Mar 2014
Measuring molecular diffusion is widely used for characterizing materials and living organisms noninvasively. This characterization relies on relations between macroscopic diffusion metrics and structure at ......
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Yahoo Daily News
17 Dec 2013
A new discovery may give the term drunk texting a whole new meaning. Researchers in Toronto's York University are learning to send text messages through alcohol...literally ... Using an Arduino Uno board, an Adafruit LCD, a desk fan and a household spray bottle, the researchers sent a text message across a tabletop via molecular diffusion. MORE. Top 10 Smartphones....
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PR Newswire
16 Oct 2013
NEW YORK, Oct. 16, 2013 /PRNewswire/ -- Reportlinker.com announces that a new market research report is available in its catalogue.. RNAi Technologies and Global Markets. http.//www.reportlinker.com/p01715880/RNAi-Technologies-and-Global-Markets.html#utm_source=prnewswire&utm_medium=pr&utm_campaign=Biological_Therapy. STUDY GOALS AND OBJECTIVES. This BCC Research report, RNAi ... Dr ... U.S ... MOLECULAR DIFFUSION AND IMMUNE DEFENSE 46 ... 95 ... 99....
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noodls
22 Jul 2013
(Source. Rice University) ... A Rice alumnus who earned a B.S ... He was characterized at an AIChE Symposium in his honor in 1987 as "one of the century's most prolific researchers in thermodynamic and transport properties," pioneering the measurement of hydrocarbon vapor-water-gas equilibrium, phase transitions and molecular diffusivity and the use of laser light scattering to measure properties in the critical region ... While he was "Dr....
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PNAS
25 Jun 2013
Here we establish that water molecular diffusion is directly modulated by underlying neuronal activity using a rat forepaw stimulation model under different conditions of neuronal stimulation and neurovascular coupling....
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