What is the main difference between molarity and molality?
Answer and explanation
Correct answer: Molarity is based on volume and molality on mass of solvent
Both quantities use moles of solute in the numerator, but their denominators differ. Molarity uses the volume of the final solution, usually in litres, whereas molality uses the mass of the solvent, usually in kilograms. This difference also explains why molarity is temperature-sensitive and molality is comparatively stable.
Frequently asked questions
What is the correct answer to this question?
Molarity is based on volume and molality on mass of solvent
Why is this the correct answer?
Both quantities use moles of solute in the numerator, but their denominators differ. Molarity uses the volume of the final solution, usually in litres, whereas molality uses the mass of the solvent, usually in kilograms. This difference also explains why molarity is temperature-sensitive and molality is comparatively stable.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
