Question

Under what conditions will the molality of a solute not be equal to it's molarity?

Answer 1

Molality of a solution cannot be equal to the molarity of a solution.
Because molality =(moles of solute)/ (weight of solvent)

whereas
molarity is =(moles of solute)/ (volume of solution)

Until and unless volume of solution is equal to weight of solvent, molarity is never equal to molality.

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