Question

What do you mean by a concentration of a solution ? Mention two ways, of expressing the concentration of a solution.

CBSE Class IX Science SA 2 (3 Marks)

Answer 1

The concentration of a solution is the amount of solute present in a given amount (mass or volume) of solution, or the amount of solute dissolved in a given mass or volume of solvent. Two ways of expressing the concentration of a solution :
(i) Mass by mass percentage of a solution
               =    Mass of solute ÷  Mass of solution x 100
 (i) Mass by volume percentage of solution
               =    Mass of solute ÷ Volume of solution x 100

Answer 2

The concentration of solution is amount of solute present in a given amount of solution .