Question

A liquid mixture containing 25 mole % methanol and 75 mole % water, which
components are miscible in all proportions, is heated at a constant pressure of 1 atm from
a temperature of 60 0C to 100 0C. Using the following experimental T-x-y data, answer
the following questions

1) What is the temperature required to evaporate 25 mol% of the liquid mixture? What is
the composition of the residual liquid? Assume that the entire vapour formed is retained
in the apparatus and that it is completely mixed and in equilibrium with the residual
liquid.

2) What is the composition of the residual liquid and vapour when 90 mol% of the liquid
mixture is vapourized?

Answer 1

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