Question

A solution is prepared by dissolving 10 g of salt in 100 g of water. Calculate the mass by mass percentage of the solution.

• A. 9.09

Answer 1

The correct option is A 9.09
A solution contains solute and solvent.

Mass by mass percentage of a solution $=\frac{\text{Mass of the solute}}{\text{Mass of the solution}}\times 100$

Given, mass of salt (solute) = 10 g
Mass of water (solvent) = 100 g
The total mass of solution = 10 + 100 = 110 g

Mass by mass percentage of a solution
= $\frac{10}{110}\times 100=9.09\%$