In which situation may molarity and molality values not be the same?
Answer and explanation
Correct answer: When solution volume and solvent mass give different bases
Molarity is moles of solute per litre of solution, whereas molality is moles of solute per kilogram of solvent. Their denominators are different physical quantities, and density or temperature can make the numerical values differ. They may happen to be equal in a special case, but equality is not generally expected.
Frequently asked questions
What is the correct answer to this question?
When solution volume and solvent mass give different bases
Why is this the correct answer?
Molarity is moles of solute per litre of solution, whereas molality is moles of solute per kilogram of solvent. Their denominators are different physical quantities, and density or temperature can make the numerical values differ. They may happen to be equal in a special case, but equality is not generally expected.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
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