Considering the formation, breaking and strength of hydrogen bond, predict which of the following mixtures will show a positive deviation from Raout's law?

Methanol and acetone

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Chloroform and acetone

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Nitric acid and water

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Phenol and aniline

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Solution

The correct option is B Methanol and acetone
A mixture of methanol and acetone shows positive deviation from Raoult's Law. Pure methanol possesses hydrogen bonding. Introduction of acetone between the molecules of methanol results in breaking of some of these hydrogen bonds. Due to weakening of interactions, the solution shows positive deviation from Raoult's law.

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Similar questions

Question 07
Considering the formation, breaking and strength of hydrogen bond, predict which of the following mixtures will show a positive deviation from Raoult's law?
(a) Methanol and acetone (b) Chloroform and acetone
(c) Nitric acid and water (d) Phenol and aniline

Question 25
On the basis of information given below mark the correct option. Information On adding acetone to methanol some of the hydrogen bonds between methanol molecules break.
(a) At specific composition methanol-acetone mixture will form minimum boiling azeotrope and will show positive deviation from Raoult's law
(b) At specific composition methanol-acetone mixture will form maximum boiling azeotrope and will show positive deviation from Raoult's law
(c) At specific composition methanol-acetone mixture will form minimum boiling azeotrope and will show negative deviation from Raoult's law
(d) At specific composition methanol-acetone mixture will form maximum boiling azeotrope and will show negative deviation from Raoult's law

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

Q. How many pair(s) among the following show positive deviation from ideal behaviour?

___

(A) Acetone and Benzene
(B) HCl and Water
(C) Ethyl alcohol and Water
(D)

C C l_{4}

and

C H C l_{3}

(E) Ethyl chloride and Ethyl bromide
(F) Water and

H C l O_{4}

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

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