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Raoult's Law

Negative devi...

Question

Negative deviation from Raoult's law is observed in which one of the following binary liquid mixtures?

A

Ethanol and acetone

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B

Benzene and toluene

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C

Acetone and chloroform

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D

Chloroethane and bromoethane

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Solution

The correct option is C Acetone and chloroform
Negative deviation from Raoult's law is exhibited by a mixture of chloroform $(C H C l_{3})$ and acetone $(C H_{3})_{2} C O$ because of the formation of hydrogen bonding between the two molecular species.

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Similar questions

Q. A solution of

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

shows negative deviation from Raoults law.

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

Q. Which of the following will show a negative deviation from raoults law?
A. Acetone-benzene
B. Acetone-ethanol
C. Benzene- methanol
D. Acetone-chloroform

Q. Which one of the following binary liquid mixture exhibit positive deviation from Raoult's 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.

Which of the following solutions show negative deviation from Raoult’s law?
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