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Questions and Answers
What happens to the boiling point of a solution when a non-volatile solute is added?
What happens to the boiling point of a solution when a non-volatile solute is added?
- It decreases
- It depends on the nature of the solute
- It remains unchanged
- It increases (correct)
Which factor does not affect the colligative properties of a solution?
Which factor does not affect the colligative properties of a solution?
- Concentration of the solute
- Molar mass of the solute
- Volume of the solvent
- Nature of the solute particles (correct)
What is the primary reason for the lowering of vapor pressure in a solution?
What is the primary reason for the lowering of vapor pressure in a solution?
- Increase in kinetic energy
- Increase in surface area
- Decrease in kinetic energy (correct)
- Increase in molar mass
Which of the following is a colligative property?
Which of the following is a colligative property?
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Study Notes
Boiling Point and Non-Volatile Solutes
- When a non-volatile solute is added to a solution, the boiling point increases.
- This is because the solute particles disrupt the formation of vapor, making it harder for the solution to boil.
Factors Affecting Colligative Properties
- The concentration of the solute is the primary factor that affects colligative properties.
- The following factors do not affect colligative properties:
- The nature of the solute
- The nature of the solvent
Vapor Pressure Lowering
- The primary reason for the lowering of vapor pressure in a solution is the dissolution of the solute particles.
- These particles disrupt the formation of vapor, resulting in a decrease in vapor pressure.
Colligative Properties
- A colligative property is a property that depends on the number of solute particles, not their nature.
- Examples of colligative properties include:
- Boiling point elevation
- Freezing point depression
- Osmotic pressure
- Vapor pressure lowering
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