Chemistry - Thermodynamics - I Question with Solution | TestHub

ChemistryThermodynamics - IAdiabatic Process/PolytropicMedium2 minQB
ChemistryMediumstatement

Statement 1: The final temperature of an ideal gas in adiabatic expansion is less in reversible expansion than in irreversible expansion against a constant external pressure.

Statement 2: The magnitude of work done by an ideal gas in adiabatic expansion is more in reversible process than that in irreversible process.

Options:

Answer:
A
Solution:

Adiabatic: Δ U=w, so nCV(T2-T1)=w and a larger |w| means a larger fall in T. The reversible path does the maximum work, so |wrev|>|wirr| (II correct) and T2,rev<T2,irr (I correct). II is the reason. Answer (a).

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

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