Question

Which of the following reactions will occur spontaneously as written?

 

A. 3Fe2+(aq) + Cr3+(aq) -> Cr (s)  3 Fe3+ (aq)

B. 2Cr3+ (aq) + 3Sn2+ (aq) -> 3Sn4+ (aq) + 2Cr (s)

C. Sn4+ (aq) + Fe2+ (s) -> Sn2+ (aq) + Fe (s)

D. Sn2+ (aq) + Fe2+ (s) -> Sn4+ (aq) + Fe 3+ (aq)

E. 2Cr (s) + 3Fe2+ (s) -> 3Fe (s) + 2Cr3+ (aq)

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