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JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry

किसी ऊष्म-रासायनिक अभिक्रिया \(\mathrm{M} \rightarrow \mathrm{N}\), के लिए \(\mathrm{T}=400 \mathrm{~K} \text { पर } \Delta \mathrm{H}^{\ominus}=77.2 \mathrm{~kJ} \mathrm{~mol}^{-1}, \Delta \mathrm{S}=122 \mathrm{JK}^{-1}\) है \(\log\) साम्यस्थिरांक \((\log \mathrm{K})-\ldots \times 10^{-1}\) है।

  1. A \(37\)
  2. B \(38\)
  3. C \(39\)
  4. D \(40\)
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Answer & Solution

Correct Answer

(A) \(37\)

Step-by-step Solution

Detailed explanation

\( \Delta \mathrm{G}^{\circ}=\Delta \mathrm{H}^{\circ}-\mathrm{T} \Delta \mathrm{S}^{\circ} \) \( =77.2 \times 10^3-400 \times 122=28400 \mathrm{~J} \) \( \Delta \mathrm{G}^{\circ}=-2.303 \mathrm{RT} \log \mathrm{K} \)…
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