Question

`10g` of argon gas is compressed isothermally and reversibly at a temperature of `27^(@)C` from `10L` to `5L`. Calculate `q, w, DeltaU`, and `DeltaH` for this process. `R = 2.0 cal K^(-1) "mol"^(-1), log_(10)2 = 0.30`. Atomic weight of `Ar = 40`.

Answer 1

`w=-2.303nRTlog((V_(2))/(V_(1)))`
`=-2.303xx(10)/(40)xx2xx300log((5)/(10))=103.635cal`
`DeltaU=0`
`q=DeltaU-w`
`thereforeq=-w=-103.635cal`