Unit 1 notes-4-redox reactions-1

Unit 1 notes-4-redox reactions-1 - Keywords Oxidation...

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Click to edit Master subtitle style 4/8/10 Keywords Oxidation Reduction Redox reaction Oxidation number Monoatomic ions Complex ions Oxidation number Half reaction
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4/8/10 What is the activity series of the elements? This series ranks the elements in order of their strength as reducing agents in aqueous solution. strongest Li --> Li+ + e− Ca --> Ca+2 + 2e− Al --> Al+3 + 3e− H2 --> 2H+ + 2e− weakest Au --> Au+3 + 3e−
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4/8/10 Balancing Redox Reactions 1. Assign oxidation numbers. 2. Identify half reactions. 3. Balance elements other than H and O (the components of the solvent). 4. Balance charge with H3O+ or OH−. 5. Balance O with H2O. 6. Check that the half reactions are balanced (atoms and charges). 7. Ensure that the # of e−s released in the oxidation half reaction = the # of e−s gained in the reduction half reaction. 8. Add the two half reactions together. 31
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4/8/10 Assigning Oxidation Numbers (the apparent charge on an atom when electrons shared between like atoms are shared equally and electrons shared between unlike atoms are
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This note was uploaded on 04/08/2010 for the course CHM CHM140Y5 taught by Professor Dr.krish during the Spring '09 term at University of Toronto- Toronto.

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Unit 1 notes-4-redox reactions-1 - Keywords Oxidation...

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