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State Faraday'S First Law of Electrolysis. How Much Charge in Terms of Faraday is Required for the Reduction of 1 Mol of Cu2+ to Cu. - Physics

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State Faraday's first law of electrolysis. How much charge in terms of Faraday is required for the reduction of 1 mol of Cu2+ to Cu.

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Solution

Faraday's first law of electrolysis states that "the amount of chemical reaction which occurs at any electrode during electrolysis by a current is proportional to the quantity of electricity passed through the electrolytic solution or melt".

The reduction of one mol of Cu2+ to Cu can be represented as:
Cu2++ 2eCuCu2++ 2e-→Cu
Since, in this reaction there are two moles of electrons involved, so the amount of charge required is 2F.

Concept: Faraday’s Law of Induction
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