Question

Which of the following statements is not valid for an ideal solution?

• A. There is no volume change on mixing
• B. There is no enthalpy change on mixing
• C. It obeys Raoult's law
• D. It is always a dilute solution

Hint:

Review properties of ideal solutions to distinguish between enthalpy, entropy, and volume changes.

Answer 1

The Correct Option is C

For an ideal solution, entropy change occurs due to mixing, even though there are no enthalpy or volume changes. Entropy increases as molecules distribute randomly.