7 One mole of a perfect gas expands isothermally to ten times its orig – InterviewSolution

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1.	7 One mole of a perfect gas expands isothermally to ten times its original volume. The change inentropy is(A) 0.1 R(C) 10.0 R(B) 2.303 R(D) 100.0 R
Answer» heat absorbed by the gas qrev=−Wrev = 2.303 nRT logV2/V1Change in Entropy ΔS==qrev/T = 2.303 nR logV2/V1logV2V1Here, n=1 and V2/V1=10V2/V1=10∴ΔS=2.303×1×R×log10=2.303×R×1= 2.303R

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