Which concentration term is considered least affected by temperature change, if no substance is lost or removed?
Answer and explanation
Correct answer: Molality
Temperature can change the volume of a solution, so molarity, volume percentage and mass-volume percentage may change even when composition is unchanged. Molality uses moles of solute per kilogram of solvent. Mass is essentially independent of ordinary temperature changes, so molality is the least affected among these choices.
Frequently asked questions
What is the correct answer to this question?
Molality
Why is this the correct answer?
Temperature can change the volume of a solution, so molarity, volume percentage and mass-volume percentage may change even when composition is unchanged. Molality uses moles of solute per kilogram of solvent. Mass is essentially independent of ordinary temperature changes, so molality is the least affected among these choices.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Some Basic Concepts of Chemistry. Topic: Mole concept and molar mass.
