Question

A solution contains y ml of acetone in 150ml of solution. The concentration of the solution is $25\%$ in terms of volume by volume percentage. Find y.

• A. 50
• B. 40
• C. 30
• D. 20

Answer 1

The correct option is D

20

Let the volume of acetone(solute) be y ml

Total volume of solution = 150 ml

Volume by volume % =$\frac{\text{volume of solute}}{\text{volume of solution}}\times 100$

$\frac{y}{150}\times 100=25$

Volume of solute (y) = 37.5 ml