Define the following terms : (i) Mole fraction (ii) Molality (it) Molarity (iv) Mass percentage (v) Normality.

Explanation

(i) Mole fraction : Mole fraction of a component in solution is the ratio of the moles of that component and total moles present in solution.
(II) Molality : It is the number of moles of solute present in 1 kg solvent. Units: mole `kg^(-1)`
(III) Molarity : It is the number of moles of solute present in 1 litre solution. Units : mole`""^(-1)`
(iv) Mass percentage: It is the mass of solute present in 100 g solution.
(v) Normality : It is the number of gram equivalents of solute dissolved per litre of the solution. Its units are g. equivalent per litre..