Given the following standard reduction potentials in acid solution



write the formula of the weakest reducing agent.

3 answers

I don't see a reaction.
O2 + 4H+ + 4e- => 2H2O Eo= +1.23 V
Sn4+ + 2e- => Sn2+ Eo= +0.13 V
Zn2+ + 2e- => Zn(s) Eo= -0.76 V
I apologize for not checking my question after posting.
Zn ==> Zn^2+ + 2e is the strongest reducing agent (easiest to oxidize).
2H2O ==> O2 + 4e + 4H^+ is the weakest reducing agent, hardest to oxidize.