A gas obeying the Clausius equation of state is isothemally compreaped from 6MPa to 16 MPa in a closed system at 425K. The Clausius cquation of state is P=vb(T)E where P iil the pressure, T is the temperature, u is the molar volume and R is the universal gai constant. The b(T)=b0+b1T with b0=4105m3mol1 and b1=1.35107m3mol1K1. The effect of pressure on the molar enthalpy (h) at a constant temperature is given by (Pb)T=vT(Tv)2 Let hi and hf denote the initial and final molar enthalpies, respectively. Calculate the change in the molar enthalpy of the process. [6]