# Problem: Calculate the standard free energy change (kJ) for the following reaction using the standard electrode potentials. Sn(s) + Ni2+(aq)  ⇌  Sn2+(aq) + Ni(s)          Ni 2+(aq) + 2 e - → Ni(s)        E° = -0.25 V          Sn2+(aq) + 2 e - → Sn(s)        E° = -0.14 V                      A. +10                      B. -10                      C. +15                      D. -21                      E. +21

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Calculate the standard free energy change (kJ) for the following reaction using the standard electrode potentials.

Sn(s) + Ni2+(aq)  ⇌  Sn2+(aq) + Ni(s)

Ni 2+(aq) + 2 e - → Ni(s)        E° = -0.25 V

Sn2+(aq) + 2 e - → Sn(s)        E° = -0.14 V

A. +10

B. -10

C. +15

D. -21

E. +21

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Based on our data, we think this problem is relevant for Professor Telesford's class at TTU.