Question

A solution is prepared by dissolving 60 g of sodium chloride in 400 g of water. What is the mass-by-mass percent of sodium chloride in this solution?

• A. 18%
• B. 13%
• C. 0.13%
• D. 0.15%

Answer 1

The correct option is B 13%

Mass of NaCl dissolved $=$ 60 g
Mass of water taken $=$ 400 g
Total Mass of solution $=400+60=460g$

Mass / Mass % of NaCl in solution $=\frac{\text{Mass of NaCl}\times 100}{\text{Mass of solution}}$

$=\frac{60\times 100}{460}=13.04$%