What Is the E°_cell for the Cell Represented by the Combination

question 27

Multiple Choice

What is the E°_cell for the cell represented by the combination of the following half-reactions? 2Hg²⁺(aq) + 2e^- ⇄ Hg₂²⁺(aq) E° = 0.92 V
Cr³⁺(aq) + 3e^- ⇄ Cr(s) E° = -0.74 V

• A)-0.18 V
• B)0.18 V
• C)1.28 V
• D)1.66 V
• E)2.12 V