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  4. How many Faradays of electricity are required for the given reaction to occur ? MnO4- arrow Mn2+

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Q. How many Faradays of electricity are required for the given reaction to occur ?
$MnO_4^{-} \rightarrow Mn^{2+}$

AIIMSAIIMS 2016Electrochemistry

Solution:

${}^{+7}MnO4^{-} \rightarrow Mn^{2+}$
The reaction can be written as :
$MnO4^{-} \rightarrow Mn^{2+}$
Hence, $5$ moles of electrons or $5F$ of electricity are required for the given reaction.