A) enthalpy remains constant but entropy increases.
B) enthalpy decreases but entropy increases.
C) enthalpy increases but entropy decreases.
D) Both enthalpy and entropy remain constant.
Correct Answer: A
Solution :
\[\Delta H=n{{C}_{p}}\Delta T=0\] \[\Delta S\,=nR\ln \,({{V}_{f}}/{{V}_{i}})\ge 0\]
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