The boiling point composition diagram for a binary mixture of benzene and isopro

Question

The boiling point composition diagram for a binary mixture of benzene and isopropanol is shown below: What is the boiling point of pure A? What is the composition of the azeotrope? What is the boiling point of the pot solution when the solution is 20% A? In the simple distillation of the solution that is 20% A, what is the expected temperature of the initial distillate? In the fractional distillation of the solution that is 20% A, what is the expected temperature of the initial distillate? If cooling the solution fails to produce crystals, give two methods for inducing recrystallization and describe how they work.

Explanation / Answer

firstly, an azeotrope is a mixture of two or more liquids, whose propertis cannot be altered by simple distillation. this happens because of the vapours has the same constiyuets as that of the unboiled mixture.

10) a) The boiling point of pure A (isopropyl alcohol) is 1100c

b) the composition of the azeotrope isopropyl alcohol : benzene is 70:30 or 0.7:0.3

c) the boiling point of A when the composition is 20% is = 1080c

d) 1040c

e) 1080c

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