What is the entalphy change with respect to pressure at Isothermal Process for *Real Gases*?
The equation for the partial derivative of enthalpy with respect to pressure at constant temperature is given by:  $$\left(\frac{\partial H}{\partial P}\right)_T=V-T\left(\frac{\partial V}{\partial T}\right)_P$$From the equation of state for your gas, you can evaluate the rhs of this equation.