Unit 6: Solutions
- What is the colligative property that affects the freezing point of a solution?
- A) Boiling point elevation
- B) Vapor pressure lowering
- C) Osmotic pressure
- D) Freezing point depression
- Answer: D) Freezing point depression
- In an ideal solution, the total vapor pressure above the solution is:
- A) The sum of the vapor pressures of the individual components
- B) The difference between the vapor pressures of the individual components
- C) The product of the vapor pressures of the individual components
- D) The average of the vapor pressures of the individual components
- Answer: A) The sum of the vapor pressures of the individual components
- What is the primary difference between an ideal and non-ideal solution?
- A) Ideal solutions follow Raoult’s law exactly, while non-ideal solutions do not.
- B) Non-ideal solutions have a higher boiling point than ideal solutions.
- C) Ideal solutions are always unsaturated, while non-ideal solutions are saturated.
- D) Non-ideal solutions have a lower freezing point than ideal solutions.
- Answer: A) Ideal solutions follow Raoult’s law exactly, while non-ideal solutions do not.
- What happens to the boiling point of a solvent when a non-volatile solute is added?
- A) It decreases
- B) It increases
- C) It remains the same
- D) It fluctuates
- Answer: B) It increases
- The phenomenon where the concentration of a solute is greater in the vapor phase than in the liquid phase is known as:
- A) Raoult’s Law
- B) Henry’s Law
- C) Dalton’s Law
- D) Le Chatelier’s Principle
- Answer: B) Henry’s Law
- What is the effect of adding a non-volatile solute to a solution on its vapor pressure?
- A) Vapor pressure increases
- B) Vapor pressure decreases
- C) Vapor pressure remains the same
- D) Vapor pressure fluctuates
- Answer: B) Vapor pressure decreases
- Which solution would exhibit the greatest osmotic pressure?
- A) 0.1 M NaCl
- B) 0.1 M KCl
- C) 0.1 M Glucose
- D) 0.1 M Na2SO4
- Answer: D) 0.1 M Na2SO4
- What is the primary reason for the elevation of boiling point in a solution compared to the pure solvent?
- A) Increased vapor pressure
- B) Decreased vapor pressure
- C) Increased intermolecular forces
- D) Decreased intermolecular forces
- Answer: B) Decreased vapor pressure
- In which type of solution is the solute particles completely surrounded by solvent molecules?
- A) Saturated solution
- B) Supersaturated solution
- C) Unsaturated solution
- D) Concentrated solution
- Answer: C) Unsaturated solution
- Which of the following is not a colligative property?
- A) Freezing point depression
- B) Boiling point elevation
- C) Vapor pressure lowering
- D) Color intensity
- Answer: D) Color intensity
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