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, when mixed, exhibit positive deviation from Raoult’s law. This deviation arises from weaker intermolecular forces between acetone and ethanol molecules compared to their self-interactions, resulting in a vapor pressure exceeding Raoult’s law predictions.