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CUET · CHEMISTRY · PYQ PAPER 2023

How many C \(\text{mol}^{-1}\) are required to convert 1 mol of \(\text{MnO}_4^-\) to \(\text{Mn}^{2+}\)?
[1F = 96500 C]

  1. A 96500 C \(\text{mol}^{-1}\)
  2. B 193000 C \(\text{mol}^{-1}\)
  3. C 386000 C \(\text{mol}^{-1}\)
  4. D 482500 C \(\text{mol}^{-1}\)
Verified Solution

Answer & Solution

Correct Answer

(D) 482500 C \(\text{mol}^{-1}\)

Step-by-step Solution

Detailed explanation

Oxidation state of Mn in \( \text{MnO}_4^- \) is \( +7 \). Oxidation state of Mn in \( \text{Mn}^{2+} \) is \( +2 \). Number of electrons transferred \( = +7 - (+2) = 5 \). Charge required \( = 5 \times 1 \text{ F} \). Charge required…
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