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Chemistry · THERMODYNAMICS

हिन्दी

At constant pressure and temperature, the entropy change of the surroundings is related to the system's enthalpy change by which expression?

  1. A
    \( \Delta S_{\text{surr}} = \frac{\Delta H_{\text{sys}}}{T} \)
  2. B
    \( \Delta S_{\text{surr}} = -\frac{T}{\Delta H_{\text{sys}}} \)
  3. C
    \( \Delta S_{\text{surr}} = -\frac{\Delta H_{\text{sys}}}{T} \)
  4. D
    \( \Delta S_{\text{surr}} = -\frac{\Delta S_{\text{sys}}}{T} \)
View Answer & Solution

Correct answer · Option C

\( \Delta S_{\text{surr}} = -\frac{\Delta H_{\text{sys}}}{T} \)

Explanation

Heat absorbed by surroundings is \( q_{\text{surr}} = -\Delta H_{\text{sys}} \), so \( \Delta S_{\text{surr}} = \frac{q_{\text{surr}}}{T} = -\frac{\Delta H_{\text{sys}}}{T} \).
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