How many moles of electrons are required for reduction of 2 moles of Zn2+ to Zn? How many Faradays of electricity will be required? - Chemistry

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Short Note

How many moles of electrons are required for reduction of 2 moles of Zn2+ to Zn? How many Faradays of electricity will be required?

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Solution

The balanced equation for the reduction of Zn2+ to Zn is:

\[\ce{Zn^{2+} (aq) + 2e- -> Zn(s)}\]

1 mole of Zn2+ is reduced to Zn by 2 moles of the electron. Hence, for the reduction of 2 moles of Zn2+, 4 moles of electrons will be required.

As 1 mole of electron carries 1 Faraday of electricity. Hence, 4 Faradays of electricity will be required to form 2 mole of Zn from Zn2+.

Concept: Electrolytic Cell
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2021-2022 (March) Set 1

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