Which option correctly explains why molality is stable with temperature changes?
Answer and explanation
Correct answer: It is based on the mass of solvent
Molality is defined as moles of solute per kilogram of solvent. The mass of the solvent does not ordinarily change when temperature changes, whereas the volume of a solution can expand or contract. Therefore, molality generally remains stable with temperature. Option A is correct. Option C describes a volume-based quantity such as molarity, while colour and pressure alone do not define molality.
Frequently asked questions
What is the correct answer to this question?
It is based on the mass of solvent
Why is this the correct answer?
Molality is defined as moles of solute per kilogram of solvent. The mass of the solvent does not ordinarily change when temperature changes, whereas the volume of a solution can expand or contract. Therefore, molality generally remains stable with temperature. Option A is correct. Option C describes a volume-based quantity such as molarity, while colour and pressure alone do not define molality.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
