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Non-Ideal Solutions

An azeotropic...

Question

An azeotropic solution of two liquids has a boiling point higher than either of the boiling points of the two liquids when it :

A

is saturated

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B

shows no deviation from Rault's law

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C

shows negative deviation from Rault's law

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D

shows positive deviation from Rault's law

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Solution

The correct option is A shows negative deviation from Rault's law
If there is a increase in the boiling point of two liquids that means they are stong intermolecular forces of attraction after mixing and thats why they are showing negative deviation from Rault's law.

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

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

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