Question

molarity is temperature dependent but molality is not,why?

Answer 1

Heya

Molarity is temperature dependent bcoz as we know the formula of molarity which is as follows :-

Molarity (M) = No. of moles of solute/Volume of solution (in litres).

Now , Volume is temperature dependent. If temperature increases, then volume also increases and molarity decreases.

Now, come to Molality

Molality = no. of moles of solute/ Mass of solvent (in kg)

As we know mass is independent. So there is no effect on Molality.