A Voltaic Cell Consists of a Mn/Mn²⁺ Electrode (E° =

question 65

Multiple Choice

A voltaic cell consists of a Mn/Mn²⁺ electrode (E° = −1.18 V) and a Fe/Fe²⁺ electrode (E° = −0.44 V) . Calculate [Fe²⁺] if [Mn²⁺] = 0.050 M and E_cell = 0.78 V at 25°C.

• A)0.040 M
• B)0.24 M
• C)1.1 M
• D)1.8 M
• E)None of these choices are correct.

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