Under which of the following conditionis the relation DeltaH = DeltaE+ P DeltaH valid for a closed system?

Under which of the following conditionis the relation DeltaH = DeltaE+

1.	Under which of the following conditionis the relation DeltaH = DeltaE+ P DeltaH valid for a closed system?
Answer» constant pressure constant temperature constant temperature and pressure constant temperature, pressure and composition Solution :`H=E+PV:. DELTAH = DeltaE + P DELTAV + V DeltaP `. If P is constant, i.e., `DeltaP =0`,only then`DeltaH = DeltaE + P DeltaV`