Under which of the following condition is the relation `DeltaH = DeltaU +P DeltaV` valid for a closed system at

Options

A. constant pressure
B. constant temperature
C. constant temperature and pressure
D. constant temperature, pressure and composition.

Answer

A

Explanation

For cyclic process, change in state function is zero. Since, `DeltaU` and `DeltaH` are state variable, `DeltaU=0` and `DeltaH=0`