Show that if a small fraction ( – dN / N) of the material is boiled off the system referred to in… 1 answer below »

Show that if a small fraction ( – dN / N) of the material is boiled off the system referred to in Problem 9.7-1, the change in the mole fraction in the remaining liquid is

Problem 9.7-1

The phase diagram of a solution of A in B, at a pressure of 1 atm, is as shown. The upper bounding curve of the two-phase region can be represented by

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The lower bounding curve can be represented by

A beaker containing equal mole numbers of A and B is brought to its boiling temperature. What is the composition of the vapor as it first begins to boil off7 Does boiling tend to increase or decrease the mole fraction of A in the remaining liquid?

 

 

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