Why can molarity change when temperature rises?
Answer and explanation
Correct answer: The solution volume may change
Molarity is defined as moles of solute per litre of solution, so it depends on solution volume. When temperature increases, a solution can expand and its volume can change, even though the amount of solute generally remains constant. Consequently, the numerical value of molarity may change. Option A is correct. Ordinary heating does not automatically change molar mass, destroy solute moles or halve the solution mass.
Frequently asked questions
What is the correct answer to this question?
The solution volume may change
Why is this the correct answer?
Molarity is defined as moles of solute per litre of solution, so it depends on solution volume. When temperature increases, a solution can expand and its volume can change, even though the amount of solute generally remains constant. Consequently, the numerical value of molarity may change. Option A is correct. Ordinary heating does not automatically change molar mass, destroy solute moles or halve the solution mass.
Which subject and chapter does this question cover?
This is a Class 11 Chemistry question. Chapter: Chapter 01: Solutions.
