Question

One mole of a non-ideal gas undergoes change of state (2.0 atm, 3.0L, 95(K)`rarr`(4.0 atm, 5.0 L, 245 K) with a change in internal energy, `DeltaU=30.0` L atm. The change in enthalpy `(DeltaH)` of the process in L atm is
A. 40
B. 42.3
C. 44
D. Not defined, because pressure is not constant

Answer 1

Correct Answer - C
`H=U+PV, H_(2)-H_(1)=(U_(2)-U_(1))+P_(2)V_(2)-P_(1)V_(1)`
`=30+4xx5-2xx3=44 L//atm`.