1.

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

Answer»

40
42.3
44
Not defined, because pressure is not constant

Solution :`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`.


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