The standard cell potential. E°, for this reaction is 0.79 V.
6 I- (aq) + Cr2O72- (aq) + 14H+ (aq) → 3 l2 (aq) + 2 Cr3+ (aq) + 7 H2O (l)
What is the standard potential for l2 (aq) being reduced to l- (aq) given that the standard reduction potential for Cr2O72- (aq) changing to Cr3+(aq) is +1.33 V?
(A) +0.54 V
(B) -0.54 V
(C) +0.18 V
(D) -0.18 V
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