Calculate E°cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous.
I2(s) + 2e- 
2I-(aq) ;E°= 0.53 V
Cr3+(aq) + 3e- 
Cr(s) ;E°= -0.74 V
Overall reaction:
2Cr(s) + 3I2(s) 2Cr3+(aq) + (aq) + 6I-(aq)
A) E°cell = -1.27 V,spontaneous
B) E°cell = -1.27 V,nonspontaneous
C) E°cell = 1.27 V,spontaneous
D) E°cell = 1.27 V,nonspontaneous
E) E°cell = 1.54 V,spontaneous
Correct Answer:
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