Problem: What is the standard electrode potential for a voltaic cell constructed in the appropriate way from these two half-cells?  Standard Reduction Potentials                   E°      Cr 3+ (aq) + 3e– → Cr(s)                        – 0.74 V Co 2+ (aq) + 2e– → Co(s)                     – 0.28 V   A) – 1.02 V B) 0.46 V C) 0.64 V D) 1.02 V

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What is the standard electrode potential for a voltaic cell constructed in the appropriate way from these two half-cells? 

Standard Reduction Potentials                   E°     

Cr 3+ (aq) + 3e → Cr(s)                        – 0.74 V

Co 2+ (aq) + 2e– → Co(s)                     – 0.28 V

A) – 1.02 V

B) 0.46 V

C) 0.64 V

D) 1.02 V

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