Balance the following net iconic reactions, and identify which elements are oxidized and which are reduced:

Question

a. MnO4^- (aq) + S^2- (aq) --> MnO2(s) + S(s)
b. IO3^- (aq) + I^- (aq) --> I2(s)
c. Mn^2+ (aq) + BiO3^- (aq) --> MnO4^- (aq) + Bi^3+ (aq)

Answer 1

http://www.chemteam.info/Redox/Redox.html