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Question: Answered & Verified by Expert
At constant $T$ and $P$, which one of the following statements is correct for the reaction, $\mathrm{CO}(g)+\frac{1}{2} \mathrm{O}_2(g) \rightarrow \mathrm{CO}_2(g)$
ChemistryThermodynamics (C)JEE Main
Options:
  • A $\Delta H$ is independent of the physical state of the reactants of that compound
  • B $\Delta H\gt\Delta E$
  • C $\Delta H \lt \Delta E$
  • D $\Delta H=\Delta E$
Solution:
2273 Upvotes Verified Answer
The correct answer is: $\Delta H \lt \Delta E$
$\Delta n_g=1-\frac{3}{2}=\frac{-1}{2}$, As $\Delta n_g$ is negative, thus $\Delta H \lt \Delta E$

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