Question

What do you mean by the strength of a solution?

Answer 1

Strength of a solution:

• “The strength of a solution is defined as the mass of solute (in grams) dissolved in one liter of solution.”

Formula:

• It can be expressed as:

$\mathrm{Strength}=\frac{\mathrm{Mass}\mathrm{of}\mathrm{solute}\mathrm{in}\mathrm{grams}}{\mathrm{Volume}\mathrm{of}\mathrm{solution}\mathrm{in}\mathrm{litre}}$

• The units of strength are $\mathrm{g}{\mathrm{L}}^{-1}$ or $\mathrm{g}{\mathrm{dm}}^{-3}$.

Example:

When $5\mathrm{g}$ of solute is dissolved in $200\mathrm{ml}\mathrm{or}0.2\mathrm{L}$ of solution, then the strength of the solution will be:

$\mathrm{Strength}=\frac{5\mathrm{g}}{0.2\mathrm{L}}=25\mathrm{g}{\mathrm{L}}^{-1}$.

Thus, the strength of the solution is $25\mathrm{g}{\mathrm{L}}^{-1}$.