Consider two pure gases a and b each at 298 k and 1 bar pressure. calculate the free-energy change, the entropy change and the enthalpy change relative to the u

Consider two pure gases A and B each at 298 K and 1 bar pressure. Calculate the free-energy change, the entropy change and the enthalpy change relative to the unmixed gases of () a mixture of 10 mol ofA and 10 mol of B, (i) a mixture of 10 mol of A and 20 mol of B and also (ii) when 10 mol of B is added to the mixture of 10 mol of A and 10 mol of B.