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Calculate E°cell and Indicate Whether the Overall Reaction Shown Is \to

question 66

Multiple Choice

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


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