The Gibbs energy of mixing, gmix in [J/mol], of a binary liquid mixture of water (1) and

The Gibbs energy of mixing, Δgmix in [J/mol], of a binary liquid mixture of water (1) and 1-propanol (2) vs. mole fraction water (x1)is shown below. These data are at a temperature at 40°C.

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A9mix mol! 0 -100 -200 -300 -400 -500 -600 -700 -800 -900 -1000 0 0.1 0.2 0.3 0.4 0.5 X1 0.6 0.7 0.8 0.9