Which of the following colligative properties is used to determine the molar mass of a solute?
Practice Questions
1 question
Q1
Which of the following colligative properties is used to determine the molar mass of a solute?
Vapor pressure lowering
Boiling point elevation
Freezing point depression
Osmotic pressure
Freezing point depression can be used to determine the molar mass of a solute by measuring the decrease in freezing point.
Questions & Step-by-step Solutions
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Q
Q: Which of the following colligative properties is used to determine the molar mass of a solute?
Solution: Freezing point depression can be used to determine the molar mass of a solute by measuring the decrease in freezing point.
Steps: 5
Step 1: Understand what colligative properties are. These are properties that depend on the number of solute particles in a solution, not the type of particles.
Step 2: Learn about freezing point depression. This is when the freezing point of a solvent decreases when a solute is added.
Step 3: Know that by measuring how much the freezing point decreases, you can find out how many solute particles are in the solution.
Step 4: Use the formula for freezing point depression, which relates the change in freezing point to the molality of the solution and the molal freezing point depression constant.
Step 5: Rearrange the formula to solve for the molar mass of the solute using the measured freezing point depression.
