Question

A solution of acetone in chloroform:

• A. obeys Raoult’s law.
• B. forms azeotrope.
• C. shows a positive deviation from Raoult’s law.
• D. shows a negative deviation from Raoult’s law.

Hint:

Positive deviations from Raoult’s law indicate weaker interactions between the components of the solution compared to the pure components.

Answer 1

The Correct Option is C

A solution of acetone in chloroform shows a positive deviation from Raoult’s law because the intermolecular forces between acetone and chloroform molecules are weaker than those in pure acetone and pure chloroform. As a result, the vapor pressure of the solution is higher than predicted by Raoult’s law.