WBJEE · Chemistry · Thermodynamics (C)
Which of the following thermodynamic relation is correct?
- A \(\mathrm{dG}=\mathrm{VdP}-\mathrm{SdT}\)
- B \(\mathrm{dE}=\mathrm{PdV}+\mathrm{TdS}\)
- C \(\mathrm{dH}=-\mathrm{VdP}+\mathrm{TdS}\)
- D \(\mathrm{dG}=\mathrm{VdP}+\mathrm{SdT}\)
Answer & Solution
Correct Answer
(A) \(\mathrm{dG}=\mathrm{VdP}-\mathrm{SdT}\)
Step-by-step Solution
Detailed explanation
\text { Hints: } \begin{gathered} \mathrm{dG}=\mathrm{dH}-\mathrm{TdS}-\mathrm{SdT}(\text { as } \mathrm{G}=\mathrm{H}-\mathrm{TS} \text { ) } \\ \text { again, } \mathrm{H}=\mathrm{U}+\mathrm{PV} \\ \therefore \mathrm{dH}=\mathrm{dU}+\mathrm{PdV}+\mathrm{VdP} \\ \&…
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