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Azeotropic Mixtures

An azeotropic...

Question

An azeotropic solution of two liquids has boiling point lower than either of them when it :

A

shows a negative deviation from Raoult's law

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B

shows no deviation from Raoult's law

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C

shows positive deviation from Raoult's law

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D

is saturated

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Solution

The correct option is B shows positive deviation from Raoult's law
When a solution shows positive deviation from Raoult's law, the vapour pressure of the solution is high relative to vapour pressure expected from components. Hence, the solution boils at a lower temperature than it's components.

So, option C is correct.

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C H C l_{3} + C H_{3} C O C H_{3}

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Which of the following liquid pairs shows a positive deviation from Raoults law?

Q. CASE1: Read the passage given below and answer the following question.

The solution which obeys Raoult’s law over the entire range of concentration are known as ideal solutions. The solution which does not obey Raoults law over the entire range of concentration, then it is called non-ideal solution. The vapour pressure of such as a solution is either higher or lower than that predicted by Raoult’s law. If it is higher, the solution exhibits positive deviation and if it is lower, it exhibits negative deviation from Raoult’s law.
Some liquids on mixing, form azeotropes which are binary mixture having the same composition in liquid and vapour phase. There are two types of azeotropes. Minimum boiling azeotropes and maximum boiling azeotropes.

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Some liquids on mixing, form azeotropes which are binary mixture having the same composition in liquid and vapour phase. There are two types of azeotropes. Minimum boiling azeotropes and maximum boiling azeotropes.

Correct statement(s) about azeotropes is/are:
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Q. Which of the following will show a negative deviation from raoults law?
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