Multiple Choice
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:

Verified
Correct Answer:
Verified
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