Select correct option regarding change in entropy of system (ΔSsys) and of the surroundings (ΔSsurr).
A
ΔSsys>0,ΔSsurr=0
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B
ΔSsys<0,ΔSsurr>0
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C
ΔSsys=0,ΔSsurr=0
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D
ΔSsys>0,ΔSsurr<0
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Solution
The correct option is AΔSsys>0,ΔSsurr<0 For irreversible isothermal expansion process, ΔSsys=nRInV2V1+ve Since heat is absorbed by the system, so qsurr=−ve ∴ΔSsurr=−ve