For an ideal gas, the enthalpy

A. Increases with rise in pressure

B. Decreases with rise in pressure

C. Is independent of pressure

D. Is a path function

Answer: Option C

Solution(By Examveda Team)

The enthalpy of a substance is given by $$dH = {C_P}dT + \left[ {V - T{{\left( {\frac{{\partial V}}{{\partial T}}} \right)}_P}} \right]dP$$
For ideal gas $$T{\left( {\frac{{\partial V}}{{\partial T}}} \right)_P} = V$$
So, $$dH = {C_P}dT$$
So, it is dependent on temperature only.