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The quantity of electricity in Faraday needed to reduce... | null (Chemistry) | DivineJEE

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Chemistry

Exam

Chemistry

The quantity of electricity in Faraday needed to reduce 1 mol of Cr₂O $_7^{2 - }$ to Cr³⁺ is ____________.

Correct Answer:

6

Explanation

\overset{+6}{\mathrm{Cr}_2} \mathrm{O}_7^{2-} \longrightarrow 2 \mathrm{Cr}^{3+}

\because

Each

\mathrm{Cr}

is converting from

+6

to

+3

\therefore 6

faradays of charge is required

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