Which extra information is often needed to convert molarity into molality?
Answer and explanation
Correct answer: Density of the solution
Molarity is the number of moles of solute per litre of solution, whereas molality is the number of moles of solute per kilogram of solvent. To convert a solution volume into mass and then determine the solvent mass, density of the solution is commonly required, along with known solute information when necessary. Hence option A is correct; colour, taste and container shape are irrelevant.
Frequently asked questions
What is the correct answer to this question?
Density of the solution
Why is this the correct answer?
Molarity is the number of moles of solute per litre of solution, whereas molality is the number of moles of solute per kilogram of solvent. To convert a solution volume into mass and then determine the solvent mass, density of the solution is commonly required, along with known solute information when necessary. Hence option A is correct; colour, taste and container shape are irrelevant.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
