Chemistry - Thermodynamics - 1 Question with Solution | TestHub

ChemistryThermodynamics - 1Adiabatic Process/PolytropicEasy2 minPYQ_2020
ChemistryEasynumerical

Two moles of an ideal monoatomic gas at 5 bar and 300K are expanded irreversibly up to an external pressure of 1 bar. The work is done by the gas isxR(in bar.Litre). The value of 'x'is [Ris gas constant]

Answer:
288.00
Solution:

Given:pfinal=pextsop1=5,p2=1andpext=1,T1=300,T2=?
for the calculation ofT2
nCvT2-T1=-pextV2-V1=-pextnRT2P2-nRT1P1
nCvT2-T1=-pextnRT2P2-nRT1P1
nCvT2-T1=-pextnRT2P2-nRT1P1
CvT2-T1=pextRT2P2-RT1P1
3R2(T2-300)=-1R×T21-R×3005
T 2 =204K
Wirr,adia=-12×R×2041-2×R×3005
=288 R

Stream:NTA_ABHYASSubject:ChemistryTopic:Thermodynamics - 1Subtopic:Adiabatic Process/Polytropic
2mℹ️ Source: PYQ_2020

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