Question

On mixing $20\, mL$ of acetone with $60\, mL$ of chloroform, the total volume of the solution is

• A. less than $80\, mL$
• B. more than $80\, mL$
• C. equal to $80\, mL$
• D. unpredictable

Answer 1

Answer: (A)

less than $80\, mL$

Answer 2

A mixture of chloroform $(CHCl_{3})$ and aceton $(CH_{3})_{2}CO$ shows negative deviations from Raoult�s law due to formation of hydrogen bonding between the two molecules. Hence, a slight decrease in volume takes place