[Solid8Snake]

I am having difficulty balancing redox equations.

Apparently Ag is suppose to have a coefficient of 2, however I don't understand why, can you guys plz take a look at the attachments and explain to me how to do it. Thx in advance. In terms of the question itself i understand it, its just the coefficient aspect concerning balancing redox equations that I don't.

[Borek]

http://www.chembuddy.com/?left=balancing-stoichiometry&right=balancing-redox

http://www.chembuddy.com/?left=balancing-stoichiometry&right=half-reactions-method

http://www.chembuddy.com/?left=balancing-stoichiometry&right=oxidation-numbers-method