Chemistry - Thermodynamics - II Question with Solution | TestHub

ChemistryThermodynamics - IIAdiabatic Process/PolytropicMedium2 minPYQ_2020
ChemistryMediumsingle choice

The entropy change when an ideal gas under atmospheric condition at room temperature is allowed to expand from 0.5 L to 1.0 L and also is simultaneously heated to 373 K will be
(Given: C v, m  = 12 .50 J K −1 mol −1 and log 1.25 = 0.1 )

Options:

Answer:
A
Solution:

n=PVRT=0.02moles
ΔS = nRln V 2 V 1 + nC v,m ln T 2 T 1
ΔS = 0.12 + 0.06
ΔS = 0.18  JK −1

Stream:NTA_ABHYASSubject:ChemistryTopic:Thermodynamics - IISubtopic:Adiabatic Process/Polytropic
⏱ 2mℹ️ Source: PYQ_2020

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