Consider two solutions: the first is 1 mol L−1 and the second is 1 mol kg−1. On what basis are they different?
Answer and explanation
Correct answer: First is based on solution volume and second on solvent mass
The unit mol L−1 denotes molarity, which is moles of solute per litre of solution. The unit mol kg−1 denotes molality, which is moles of solute per kilogram of solvent. Thus, the first is volume-based and the second is solvent-mass-based. Option B is correct; the units themselves reveal the distinction.
Frequently asked questions
What is the correct answer to this question?
First is based on solution volume and second on solvent mass
Why is this the correct answer?
The unit mol L−1 denotes molarity, which is moles of solute per litre of solution. The unit mol kg−1 denotes molality, which is moles of solute per kilogram of solvent. Thus, the first is volume-based and the second is solvent-mass-based. Option B is correct; the units themselves reveal the distinction.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
