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JEE Mains · Chemistry · STD 12 - 2. Electrochemistry

निम्न अर्द्ध सेल के लिए \(298 \mathrm{~K}\) पर सेल विभव है : \(\times 10^{-2} \mathrm{~V}\) (निकटतम पूर्णाक) \(\mathrm{X}\left|\mathrm{X}^{2+}(0.001 \mathrm{M}) \| \mathrm{Y}^{2+}(0.01 \mathrm{M})\right| \mathrm{Y}\) (निकटतम पूर्णाक). दिया है : \(\mathrm{E}_{\mathrm{x}^{2+} \mid \mathrm{x}}^0=-2.36 \mathrm{~V}\) \(\mathrm{E}_{\mathrm{Y}^{2+} \mid \mathrm{Y}}^0=+0.36 \mathrm{~V}\) \(\frac{2.303 \mathrm{RT}}{\mathrm{F}}=0.06 \mathrm{~V}\)

  1. A \(274\)
  2. B \(273\)
  3. C \(272\)
  4. D \(275\)
Verified Solution

Answer & Solution

Correct Answer

(D) \(275\)

Step-by-step Solution

Detailed explanation

\(X + Y ^{2+} \rightarrow Y + X ^{2+}\) \(E _{\text {Cell }}^0=0.36-(-2.36)=2.72\,V\) \(E _{\text {Cell }}=2.72-\frac{0.06}{2} \log \frac{0.001}{0.01}\) \(=2.72+0.03=2.75\,V\) \(=275 \times 10^{-2}\,V\)
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