Question

80 mL of solution contains 20 g of solute. Calculate the concentration in terms of mass by volume percentage of the solution.

• A. 25%
• B. 35%
• C. 45%
• D. 55%

Answer 1

The correct option is A 25%

Mass of the solute = 20 g

Volume of the solution = 80 mL Concentration in terms of mass by volume percentage =
$\frac{\text{mass of solute}}{\text{volume of solution}}\times 100$

= $\frac{\text{20}}{\text{80}}\times 100$

= 25%