Oxidation Numbers: This video is a prerequisite for balancing of equation using Oxidation number method and Ion electron method. Before balancing equations make sure you watch this video. Redox Reactions Assigning oxidation numbers for elements in molecules Rules for assigning oxidation numbers Exceptions, Peroxides,Fluorides of Oxygen Worked out examples Suitable for High school Chemistry SCH4U, AP Chemistry, IB Chemistry, CBSE, IGCSE, ISC, ICSE, ALevel, OLevel SAT Kemtweet, Vinstan, http:www.vinstan.com for more stuff on chemistry Rules for complex ions are different K3[Fe(CN)6] K has +1 oxidation state Fe = X unknown CN = -1 (You need to know the oxidation numbers of ligands only then you can proceed) K3[Fe(CN)6] (3x+1) + [X + (6 x -1) = zero 3 +X -6 = zero X = +3 Therefore the oxidation number of Fe = +3 Hope this helps Ligands can be neutral positive or mostly negative. H20 and NH3 are neutral ligands More Videos and Lessons at http://www/vinstan.com http://www.youtube.com/user/globetroting/featured NOTE If you are new to balancing, then viewing the videos in the following sequence should help. 1. How to assign oxidation number http://www.youtube.com/watch?v=lxEvuJPTvew 2. Balancing equation using oxidation number method http://www.youtube.com/watch?v=mvbPtQfAfUQ 3. Balancing equations using ion-electron or half reaction method http://www.youtube.com/watch?v=FFKZYED8VVY NOTE If you are new to balancing, then viewing the videos in the following sequence should help. 1. How to assign oxidation number http://www.youtube.com/watch?v=lxEvuJPTvew 2. Balancing equation using oxidation number method http://www.youtube.com/watch?v=mvbPtQfAfUQ 3. Balancing equations using ion-electron or half reaction method http://www.youtube.com/watch?v=FFKZYED8VVY

• published: 07 Jan 2013
• views: 47792