Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Solutions

Question:

What is the mass percentage of NaCl in the solution if 1.75g of NaCl is dissolved in 5.85g of water.

Options:

23.02

29.9

23.98

25.00

Correct Answer:

23.02

Explanation:

The correct answer is Option (1) → 23.02

Mass percentage of a component of a solution is defined as:

$\text{Mass percentage}=\frac{\text{Mass of the component in the solution}}{\text{Total mass of the solution}}× 100$

For mass percentage of NaCl in solution, it is given

Mass of NaCl = 1.75g (Mass of component)

Mass of water = 5.85g

Total mass of the solution = 1.75 + 5.85 = 7.60 g

Therefore, Mass percentage of NaCl = (1.75 ÷ 7.60) × 100 = 23.02%