The figure below gives the molar enthalpy of n-octanol (1) -n-decane (2) mixtures at 1 bar and 300 K. Both are liquids at these conditions.
Molar Enthalpy of Octanol(1)-Decane(2) Mixture at T = 300 K and P = 1 bar
a) Do octanol and decane form an ideal solution? Explain (1)
b) You are tasked with designing a process for producing a liquid solution of 50 mol% octanol and 50 mol% decane at 300 K from the pure components. What energy transfers (positive, negative for system) are necessary to produce the desired solution? Explain your answer using an energy balance (1.5)
c) Estimate (using the attached plot) the partial molar enthalpy of the two mixture components in the produced mixture, in kJ/mol. (1.5)
d) At what mole fraction do both partial molar enthalpies have the same value? (1)
