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Question
How many faradays of electricity are required for the following reaction to occur
\[\ce{MnO^-_4 -> Mn^2+}\]
Options
5F
3F
1F
7F
Solution
5F
Explanation:
\[\ce{7MnO^-_4 + 5e^- -> Mn^{2+} + 4H2O}\]
5 moles of electrons i.e., 5F charge is required.
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