Question

What are the three ways to measure the concentration of a solution?

Answer 1

Concentration (C): It is the ratio of mass of the solute (m) which is dissolved in the solution and volume (V) of the solution.

$\mathrm{C}=\mathrm{m}/\mathrm{V}$

The three ways to measure the concentration of a solution are molarity, mole fraction, and molality.

1. Molarity (M): It is calculated by the number of moles (n) of solute and volume of solution (V). $\mathrm{M}=\mathrm{n}/\mathrm{V}$
2. Mole fraction (x): It is the ratio of number of moles of particular element (${\mathrm{n}}_{\mathrm{i}}$) and total number of moles of substance (${\mathrm{n}}_{\mathrm{total}}$). $\mathrm{x}={\mathrm{n}}_{\mathrm{i}}/{\mathrm{n}}_{\mathrm{total}}$
3. Molality (m):It is measured by the number of moles (n) of a solute in terms of mass of the solvent (kg). $\mathrm{m}=\mathrm{n}\mathrm{of}\mathrm{solute}/\mathrm{kg}\mathrm{of}\mathrm{solvent}$