Comelli and Francesconi examined mixture of propionic acid with various other organic liquids at 313.15K. They report the excess volume of mixing propionic acid with oxane as VE = x1x2{a0 + a1(x1 - x2)}, where x1 is the mole fraction of propionic acid, x2 that of oxane, a0 = - 2.4697 cm3 mol-1 and a1 = 0.0608 cm3 mol-1 . The density of propionic acid at this temperature is 0.97174 g cm-3 that of oxane is 0.86398 g cm-3 . (a) Derive an expression for the partial molar volume of each component at this temperature. (b) Compute the partial molar volume for each compound in equimolar mixture.