Question

A solution contains 50 g of common salt in 400 g of water. Calculate the concentration by mass percentage of the solution.

• A. 11.1%
• B. 12%
• C. 12.5%
• D. 14.28%

Answer 1

The correct option is A

11.1%

mass of solute= 50g

mass of solvent = 400g

mass of solution = mass of solute + mass of solvent

= 50+400

= 450

mass percentage of solution $=\frac{\text{mass of solute}}{\text{mass of solution}}\times 100$

$=\frac{50}{450}\times 100=11.11\%$.