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Five moles of an ideal gas at 1 bar and 298 K is expanded into vacuum to double the volume. The work done is :- (1) Cv(T2 – T1)

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Five moles of an ideal gas at 1 bar and 298 K is expanded into vacuum to double the volume. The work done is :- 

(1) Cv(T2 – T1) 

(2) –RT ln V2/V1 

(3) –RT(V2 – V1) 

(4) zero

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1 Answer

+1 vote
by (47.2k points)

(4) zero

As the expansion is done in vaccum that is in absence of pext so 

W = zero

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