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JIPMER 2011
Exam
JIPMER
Year
2011
Subject
Chemistry
Chapter
Thermodynamics (C)

JIPMER 2011 · Chemistry · Thermodynamics (C)

For the reaction, H_2 O(l) leftharpoons H_2 O(g) at 373 K and 1 atm...

For the reaction, H2O(l)⇌H2O(g)\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightleftharpoons \mathrm{H}_2 \mathrm{O}(\mathrm{g}) at 373 K and 1 atm pressure

Options

  1. AΔH=0\Delta H=0
  2. BΔE=0\Delta E=0
  3. CΔH=TΔS\Delta H=T \Delta S
  4. DΔH=ΔE\Delta H=\Delta E

Correct answer

C. ΔH=TΔS\Delta H=T \Delta S

Step-by-step solution

ΔG=ΔH−T⋅ΔS\Delta G=\Delta H-T \cdot \Delta S For the reaction, H2O(l)⇌H2O(g)\mathrm{H}_2 \mathrm{O}(\mathrm{l}) \rightleftharpoons \mathrm{H}_2 \mathrm{O}(\mathrm{g}) ΔG=0\Delta G=0 (at equilibrium) ∴ΔH=T⋅ΔS\therefore \quad \Delta H=T \cdot \Delta S
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