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

Question 47

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 Ecell = 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 is correct.

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