Which option gives the correct definition of molality?
Answer and explanation
Correct answer: Moles of solute per kilogram of solvent
Molality, represented by m, is the number of moles of solute dissolved in one kilogram of solvent: m = nsolute/mass of solvent in kilograms. It uses the mass of the solvent rather than the volume of the final solution. Consequently, molality is generally less affected by temperature-related volume changes than molarity. Option B is the definition of molarity.
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, represented by m, is the number of moles of solute dissolved in one kilogram of solvent: m = nsolute/mass of solvent in kilograms. It uses the mass of the solvent rather than the volume of the final solution. Consequently, molality is generally less affected by temperature-related volume changes than molarity. Option B is the definition of molarity.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
