First slide

Faraday's Laws

Question

Total charge required for the oxidation of two moles Mn₃O₄ into MnO₄^2- in presence of alkaline medium is :

Easy

A

5 F
B

10 F
C

20 F
D

None of these

Solution

1 mole Mn₃O₄, lose $(6 - \frac{8}{3}) \times 3 = 10 mole$
e^-; so total charge required = 2 x 10 $\Rightarrow$ 20 F

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