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

Question 8

Multiple Choice

Calculate E°cell and indicate whether the overall reaction shown is spontaneous or nonspontaneous.
H2O2(aq) + 2H+(aq) + 2e-  Calculate E°<sub>cell</sub> and indicate whether the overall reaction shown is spontaneous or nonspontaneous. H<sub>2</sub>O<sub>2</sub>(aq) + 2H<sup>+</sup>(aq) + 2e<sup>-</sup>   2H<sub>2</sub>O(l) ;E° = 1.77 V Fe<sup>3+</sup> (aq) + e<sup>-</sup>   Fe<sup>2+</sup>(aq) ;E° = 0.77 V Overall reaction: 2Fe<sup>3+</sup>(aq) + 2H<sub>2</sub>O(l)   \to  H<sub>2</sub>O<sub>2</sub>(aq) + 2H<sup>+</sup>(aq) + 2Fe<sup>2+</sup>(aq)  A) E°<sub>cell</sub> = -1.00 V,nonspontaneous B) E°<sub>cell</sub> = -1.00 V,spontaneous C) E°<sub>cell</sub> = 1.00 V,nonspontaneous D) E°<sub>cell</sub> = 1.00 V,spontaneous E) E°<sub>cell</sub> = -0.23 V,nonspontaneous
2H2O(l) ;E° = 1.77 V
Fe3+ (aq) + e-  Calculate E°<sub>cell</sub> and indicate whether the overall reaction shown is spontaneous or nonspontaneous. H<sub>2</sub>O<sub>2</sub>(aq) + 2H<sup>+</sup>(aq) + 2e<sup>-</sup>   2H<sub>2</sub>O(l) ;E° = 1.77 V Fe<sup>3+</sup> (aq) + e<sup>-</sup>   Fe<sup>2+</sup>(aq) ;E° = 0.77 V Overall reaction: 2Fe<sup>3+</sup>(aq) + 2H<sub>2</sub>O(l)   \to  H<sub>2</sub>O<sub>2</sub>(aq) + 2H<sup>+</sup>(aq) + 2Fe<sup>2+</sup>(aq)  A) E°<sub>cell</sub> = -1.00 V,nonspontaneous B) E°<sub>cell</sub> = -1.00 V,spontaneous C) E°<sub>cell</sub> = 1.00 V,nonspontaneous D) E°<sub>cell</sub> = 1.00 V,spontaneous E) E°<sub>cell</sub> = -0.23 V,nonspontaneous
Fe2+(aq) ;E° = 0.77 V
Overall reaction:
2Fe3+(aq) + 2H2O(l) \to H2O2(aq) + 2H+(aq) + 2Fe2+(aq)


A) E°cell = -1.00 V,nonspontaneous
B) E°cell = -1.00 V,spontaneous
C) E°cell = 1.00 V,nonspontaneous
D) E°cell = 1.00 V,spontaneous
E) E°cell = -0.23 V,nonspontaneous

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