Question

Given:
Pb2+(aq) + 2e-Pb(s); = -0.13 V
Mg2+(aq) + 2e- Mg(s); = -2.38 V
Ag+(aq) + e- Ag(s); = 0.80 V
2H+(aq) + 2e- H2(g); = 0.00 V
Under standard-state conditions, which of the following species is the best reducing agent?
A) H2
B) Mg2+
C) Ag+
D) Pb
E) Ag

Answer

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