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.