Chemistry - Thermodynamics - I Question with Solution | TestHub
Statement-1 : The magnitude of work done by an ideal gas in adiabatic reversible expansion from the same initial pressure and volume to the same final volume is less than that in isothermal reversible process.
Statement-2: If an ideal gas is expanded reversibly from the same initial pressure and volume to the same final volume, then the final pressure in adiabatic process is less than that in the isothermal process.
Options:
Answer:
Solution:
Statement-2 is correct: In adiabatic expansion, temperature drops, causing pressure to fall more rapidly than in isothermal expansion for the same volume change. Thus, final pressure is lower in adiabatic expansion. Statement-1 is correct: Since pressure is lower throughout the adiabatic path, the work done (area under P-V curve) is less than in isothermal expansion. Statement-2 explains Statement-1. Hence, A.
