The molar enthalpy of a binary liquid mixture of species 1 and 2 is given by:
You wish to dilute and cool a process stream containing 50 mol% species 1 and 50 mol% species 2. Consider the adiabatic mixing of a stream a (containing 50 mol% species 1 and 50 mol% species 2) with a molar flow rate of 2 mol/s at 75°C and 1 bar with a stream b of pure species 1 flowing at a rate of 3 mol/s at 20°C and 1 bar. What is the exit temperature of the outlet stream? You may assume steady-state.