Why is molality preferred over the molarity ?

In case of molarity the volume of solvent is taken but in case of molality the mass of solvent is taken. With change in temprature the volume can increase or decrease but the mass remains same . So molality is preferred over the molarity.

The main reason for this is that the molarity is the number of moles of solute present in 1 litre of the solvent.

Where as the molality is the number of moles of the solute present in 1 kilogram of the solvent.

Published by Ankush Sharma

I am M.Sc (chemistry ) from Punjabi University Patiala. I am a science teacher with expertise in chemistry, with 8 years of experience in teaching. Writing and blogging is my hobby, I write whenever I am free. I am constantly working on creating a new and easy way of learning the tough things in an effective way. I am constantly working to make authentic and reliable information to be shared with my students and widen the horizons of knowledge.

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