Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IAdiabatic Process/PolytropicMedium2 minQB
ChemistryMediumstatement

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:
A
Solution:

Adiabatic expansion cools the gas, so P2ad=P1(V1/V2)γ<P1V1/V2=P2iso since γ>1: II is correct. The adiabatic curve lies below the isotherm over the whole path, so the area under it (work) is smaller: I is correct, and II is the reason. Answer (a).

Stream:JEESubject:ChemistryTopic:Thermodynamics - ISubtopic:Adiabatic Process/Polytropic
⏱ 2mℹ️ Source: QB

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