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How many volts is the standard cell potential E for the following battery reaction? Cr(s) + 3Fe3+(aq) 3Fe2+(aq) + Cr3+ (aq) ECr+3/Cr = -0.74V; EFe+3/Fe+2

How many volts is the standard cell potential E for the following battery reaction?

Cr(s) + 3Fe3+(aq) 3Fe2+(aq) + Cr3+ (aq) ECr+3/Cr = -0.74V; EFe+3/Fe+2 = +0.77V

A. -0.03

B. +0.03

C. +1.51

D. -1.51

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