Which is the correct definition of molality?
Answer and explanation
Correct answer: Moles of solute per kilogram of solvent
Molality is defined as moles of solute divided by the mass of solvent in kilograms: m = nsolute/msolvent. It uses solvent mass, not solution volume. Option A is molarity, option C is a volume-based percentage, and option D is not the standard concentration definition. Hence, option B is correct.
Frequently asked questions
What is the correct answer to this question?
Moles of solute per kilogram of solvent
Why is this the correct answer?
Molality is defined as moles of solute divided by the mass of solvent in kilograms: m = nsolute/msolvent. It uses solvent mass, not solution volume. Option A is molarity, option C is a volume-based percentage, and option D is not the standard concentration definition. Hence, option B is correct.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
