Question

A solution is formed by mixing chloroform (CHCl3) and acetone (CH3COCH3).
Which of the following is true regarding the nature of this solution?

• A. It shows positive deviation from Raoult's law due to weak intermolecular forces.
• B. It shows negative deviation due to strong dipole-dipole interactions.
• C. It obeys Raoult's law over the entire range of composition.
• D. It forms an ideal solution with no enthalpy change.

Hint:

When dealing with solutions, remember that positive deviation occurs when the forces between different molecules are weaker than those between the same molecules. In contrast, negative deviation occurs when the forces are stronger.

Answer 1

The Correct Option is A

When chloroform (CHCl3) and acetone (CH3COCH3) are mixed, they form a solution that exhibits a positive deviation from Raoult's law. This is because the intermolecular forces between the molecules of chloroform and acetone are weaker than those between similar molecules. As a result, the vapor pressure of the solution is higher than expected, indicating a positive deviation from Raoult's law.