Revise Gamsat

meparie said:

Hi,

I am slightly confused by the redox questions in unit 4. i was wondering if you could run through the working for me?

As I remember it's a case of counting the positive and negative ions before and after the reaction. If there are more negatives it's a reduction reaction. If there are more positives it's an oxidation reaction. I don't have it in front of me right now though.

I'll have a closer look at it later when I get the chance.