SATHEE: Thermodynamics Question 202

Thermodynamics Question 202

Question: Work done per mol in an isothermal change is

[RPMT 2004; BCECE 2005]

Options:

A) $R T \log_{10} \frac{V_{2}}{V_{1}}$

B) $R T \log_{10} \frac{V_{1}}{V_{2}}$

C) $R T \log_{e} \frac{V_{2}}{V_{1}}$

D) $R T \log_{e} \frac{V_{1}}{V_{2}}$

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Answer:

Correct Answer: C

Solution:

For isothermal process $P V = R T \Rightarrow P = \frac{R T}{V}$

$∴$ W $= P d V = \int_{V_{1}}^{V_{2}} \frac{R T}{V} d V = R T \log_{e} \frac{V_{2}}{V_{1}}$

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Thermodynamics Question 202

Question: Work done per mol in an isothermal change is

Options:

Answer:

Solution:

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