1.

3 moles of CO_(2) gas expands isothermally against external pressure of 1 bar. Volume increases from 10 L to 30 L respectively. The system is in thermal contact of surroundings at temperature 15^(@)C. Entropy change in isotehrmal process is: DeltaS=2.303nR" log "((V_(2))/(V_(1))). Q. Select the correct relation:

Answer»

`DeltaS_("system")GT0,DeltaS_(surr).=0`
`DeltaS_(surr)lt0,DeltaS_("system")gt0`
`DeltaS_("system")=0,DeltaS_(surr).=0`
`DeltaS_(surr)gt0,DeltaS_("system")lt0`

Answer :B


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