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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Solution

D.Acetone-chloroform
A solution of chloroform and acetone shows negative deviation from Raoult’s law due to the formation of hydrogen bond with acetone molecule by chloroform molecule. This decreases the chances of molecules of component to escape leading to the decrease in vapour pressure. And hence the solution exhibits negative deviation from Raoult’s law.

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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

Q. Why does solution of chloroform & acetone show negative deviation from Raoult's law?
Illustrate the deviation with the help of diagrams.

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

Q. What type of deviation from Raoult's law is exected?
(a) when equal volume of acetone and ethanol is mixed?
(b) when equal volume of acetone and chloroform is mixed?

State True or False.

The liquid pair of acetone-chloroform shows a positive deviation from Raoult's law.

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

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