Question

Two moles of an ideal gas is expanded irreversibly and isothermally at `37^(@)C` until its volume is doubled and `3.41KJ` heat is absorbed from surrounding. P`DeltaS_("total")` (system +surrounding) is:
A. `-0.52J//K`
B. `0.52J//K`
C. `22.52J//K`
D. `0`

Answer 1

Correct Answer - D
`DeltaS_("system")=nR` in `(V_(2))/(V_(1))=2xxRxxln2=11.52J//K`
`DeltaS_("surrounding")=-(3.41xx1000)/(310)=-11J//K`
`Delta_("total")=+11.52-11=+0.52J//K`