Question
Question: The charge required for reducing 1 mole of \(MnO_{4}^{-}\) to \(Mn^{2 +}\) is...
The charge required for reducing 1 mole of MnO4− to Mn2+ is
A
1.93×105C
B
2.895×105C
C
4.28×105C
D
4.825×105C
Answer
4.825×105C
Explanation
Solution
1moleMnO4−+5moles5e−→1moleMn2+
5 moles of electrons are needed for reduction of 1 mole of MnO4− to Mn2+
5 moles of electrons = 5 Faradays
Quantity of charge required =5×96500
=4.825×105Coulombs