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JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
Which of the following statements/ relationships is not correct in thermodynamic changes ?
- A \(\Delta U\, = 0\) (isothermal reversible expansion of a gas)
- B \(w = - nRT\,\ln \frac{{{V_2}}}{{{V_1}}}\) ( isothermal reversible expansion of an ideal gas)
- C \(w = nRT\,\ln \frac{{{V_2}}}{{{V_1}}}\) (isothermal reversible expansion of an ideal gas)
- D For a system of constant volume heat involved directly changes to internal energy.
Answer & Solution
Correct Answer
(C) \(w = nRT\,\ln \frac{{{V_2}}}{{{V_1}}}\) (isothermal reversible expansion of an ideal gas)
Step-by-step Solution
Detailed explanation
For isothermal reversible expansion \(w = - nRT\,\ln \frac{{{V_2}}}{{{V_1}}}\)
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