Q$\mathrm{.}1.$ Solid A$-$B alloys are regular in their thermodynamic behavior. The integral enthalpy of mixing, $H^M,$ at $443C$ is given below as a function of

composition.

Calculate these thermodynamic values of the alloy that contains $38$ wt$.\%$ B at the given temperature.

a$)$ The integral molar entropy of mixing,

b$)$ The integral molar free energy of mixing,

c$)$ The partial molar mixing enthalpy of A and B$,$

d$)$ The activity coefficients of A and $B,$

e$)$ The activities of A and $B.$

$($MW of elements $A=62\mathrm{.}3,B=190\mathrm{.}2\frac{g}{m}ol$