1.

Define (i) Molality (ii) Normality

Answer»

Solution :(i) Molality (m): It is DEFINED as the number of moles of the solute present in 1 kg of the solvent
`m = ("Number of moles of solute")/("Mass of the solvent (in kg)")`
(ii) Normality (N): It is defined as the number of GRAM equivalents of solute in 1 litre of the solution.
`N= ("Number of gram EQUIVALENT of solute")/("Volume of solution (in L)")`


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