6.52 the molar enthalpy of a binary liquid mixture of species 1 and 2 is given by:
h = x1 (275 + 75t) + x2(125 + 50t) + 750x1x2[j / mol]
where t is the temperature in [k]
(a) what is the enthalpy of mixing, \deltahmix in [j], of a mixture with 2 mol of 1 and 3 mol of 2 at 20°c?
(b) consider the adiabatic mixing of a stream of pure 1 flowing at 2 mol/s with a stream of pure 2 flowing at 3 mol/s. both inlet streams are at 20°c. what is the exit temperature of the mixture?
koretsky, milo d.. engineering and chemical thermodynamics, 2nd edition (page 384). wiley higher ed. kindle edition.