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JEE Mains · Chemistry · STD 12 - 2. Electrochemistry

\(\mathrm{FeO}_4^{2-} \xrightarrow{+2.2 \mathrm{~V}} \mathrm{Fe}^{3+} \xrightarrow{+0.70 \mathrm{~V}}\) \(\mathrm{Fe}^{2+} \xrightarrow{-0.45 \mathrm{~V}} \mathrm{Fe}^0\) \(\mathrm{E}_{\mathrm{FeO}_4^{2-} / \mathrm{Fe}^{2+}}^\theta\) is \(\mathrm{x} \times 10^{-3} \mathrm{~V}\) है। \(\mathrm{x}\) का मान है________

  1. A \(1824\)
  2. B \(1825\)
  3. C \(1823\)
  4. D \(1822\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(1825\)

Step-by-step Solution

Detailed explanation

\(4 \times E =3 \times 2.2+1 \times 0.7\) \(E =\frac{7.3}{4}=1.825 V =1825 \times 10^{-3}\,V\)
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