In which situation is molality more suitable than molarity?
Answer and explanation
Correct answer: When temperature is changing
Molarity depends on solution volume, and volume can change with temperature. Molality depends on the mass of solvent, which remains essentially constant with ordinary temperature changes. Therefore molality is preferable for temperature-change studies. Colour, zero pressure, and the physical state of solute do not provide the relevant reason.
Frequently asked questions
What is the correct answer to this question?
When temperature is changing
Why is this the correct answer?
Molarity depends on solution volume, and volume can change with temperature. Molality depends on the mass of solvent, which remains essentially constant with ordinary temperature changes. Therefore molality is preferable for temperature-change studies. Colour, zero pressure, and the physical state of solute do not provide the relevant reason.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
