The Overall Reaction 2Co³⁺(aq) + 2Cl^-(aq) $\rarr$ 2Co²⁺(aq) + Cl₂(g) Has the Standard Cell Voltage E

question 103

Multiple Choice

The overall reaction 2Co³⁺(aq) + 2Cl^-(aq) $\rarr$ 2Co²⁺(aq) + Cl₂(g) has the standard cell voltage E ^$\circ$ _cell= 0.46 V. Given E ^$\circ$ = 1.36 V for the reaction Cl₂(g) + 2e^- $\rarr$ 2Cl^-(aq) , calculate the standard reduction potential for the following the half reaction at 25 ^$\circ$ C: Co³⁺ + e^- $\rarr$ Co²⁺

• A) 1.82 V
• B) -0.90 V
• C) 0.90 V
• D) -1.82 V
• E) -1.36 V

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