Question

When a solution of $CH{Cl}_3$ and acetone is formed, the solution is non-ideal with _______ deviation from Raoult's law.The vapour pressure of such a solution will be _______ than the corresponding ideal solution.

• A. Positive , more
• B. Negative , more
• C. Negative ,less
• D. Positive ,less

Answer 1

Answer: (C)

Negative ,less

Due to hydrogen bonding, escaping tendency of both components 'A' and 'B' is lowered showing lower vapour pressure than expected ideally. Hence, such solution will show negative deviation from Raoult's law.

So, option C is correct.