Question

Calculate the concentration in terms of mass by volume percentage of the solution containing, 2.5g potassium chloride in 50ml of potassium chloride (KCl) solution?

• A. 25%
• B. 20%
• C. 5%
• D. None of these

Answer 1

The correct option is C 5%

Solution:- (C) $5\%$

Given that:-

Mass of solute $=2.5g$

Volume of solution $=50mL$

As we know that, mass by volume percentage of the solution is given by-

Mass by volume $\%=\frac{\text{mass of solute}}{\text{Volume of solution}}\times 100=\frac{2.5}{50}\times 100=5\%$

Hence the required answer is $\left(C\right)5\%$.