Question

Under which of the following conditions is the
relation, DeltaH = DeltaE + P DeltaV valid for a system
a) constant pressure
b) constant temperature
c) constant temperature and pressure
d) constant temperature, pressure and composition​

Answer 1

Answer:

a. constant pressure

Explanation:

According to the first law of thermodynamics

∆E=∆Q-P∆V

∆Q=∆E+P∆V

comparing the equation given

∆Q=∆H

nC∆t=n(Cp)∆t

C=Cp

happens only in const pressure process

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