Question

A solution of acetone in ethanol:

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

Hint:

Solutions showing a positive deviation from Raoult’s law have weaker interactions between solute and solvent molecules compared to the individual components.

Answer 1

The Correct Option is C

Acetone and ethanol form a solution that shows a positive deviation from Raoult’s law. This occurs because the intermolecular forces between acetone and ethanol are weaker than those between the individual molecules, leading to a greater vapor pressure than predicted by Raoult’s law.