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Question

A gas mixture contain 1g H2 and 1g He temperature of gas mixture is increased from 0 to 1000C at isobaric process. Then find given heat of gas mixture
[γHe=5/3,γHe=7/5,R=2cal/molK]

A
124cal
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B
327cal
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C
218cal
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D
475cal
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Solution

The correct option is D 475cal
δ=CpCv
,δ1=CpCvCv=RC
CV=Rδ1=R67451
Cv=45R22
Cp=Cv+R=6722R
ΔT=100K
H=nCpΔT
0.75×6722×2×100
=475cal

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