MHT CET · Chemistry · Thermodynamics (C)
For the reaction, \(\mathrm{C}_2 \mathrm{H}_2 \mathrm{OH}(l)+30_{2(\mathrm{~g})} \rightarrow 2 \mathrm{C}_2 \mathrm{O}(l) \Delta \mathrm{U}\) is the heat of reaction at constant volume. Then heat of reaction at constant pressure is
- A \(\Delta \mathrm{H}=\Delta \mathrm{U}+\mathrm{RT}\)
- B \(\Delta \mathrm{H}=\Delta \mathrm{U}+2 \mathrm{RT}\)
- C \(\Delta \mathrm{H}=\Delta \mathrm{U}-2 \mathrm{RT}\)
- D \(\Delta \mathrm{H}=\Delta \mathrm{U}-\mathrm{RT}\)
Answer & Solution
Correct Answer
(D) \(\Delta \mathrm{H}=\Delta \mathrm{U}-\mathrm{RT}\)
Step-by-step Solution
Detailed explanation
\(\begin{aligned} & \Delta H=\Delta U+(2-3) R T \\ & \Delta H=\Delta U-R T\end{aligned}\)
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