The enthalpy at 320 K and 1 bar of a binary liquid mixture is

H = 300 x1 + 500 x2 + x1x2(40 x1 + 20 x2)

Where H is in J/mol. For the stated temperature and pressure, determine

i. Expressions for H̅̅̅1̅ and H̅̅̅2̅ in terms of x1.

ii. Numerical values for the pure component enthalpies H1 and H2.

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