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Consider the following reaction MnO 4 - + 8 H + + 5 e - → Mn + 2 + 4 H 2 O   , E ° = 1 . 51   V The quantity of electricity required in Faraday to reduce five moles of MnO 4 - is

Correct answer

25

Step-by-step solution

For this balanced reaction, the change in oxidation number of the metal ion is Mn + 7   → Mn + 2 . Therefore one mole Mn required 5 Faraday Hence, for five mole Mn required 25 Faraday.

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