Unit 6: Solutions
- Which of the following colligative properties is used to measure the molecular weight of a solute?
- A) Freezing point depression
- B) Boiling point elevation
- C) Osmotic pressure
- D) Vapor pressure lowering
- Answer: C) Osmotic pressure
- What is the van ‘t Hoff factor for glucose in solution?
- A) 1
- B) 2
- C) 3
- D) 4
- Answer: A) 1
- Which of the following equations is used to calculate the osmotic pressure of a solution?
- A) π = i × C × R × T
- B) ΔT_b = K_b × m
- C) ΔT_f = K_f × m
- D) P = P_0 × X_solvent
- Answer: A) π = i × C × R × T
- Which of the following will have the greatest impact on the boiling point elevation of a solution?
- A) High molar mass of solute
- B) High concentration of solute
- C) Low temperature
- D) Low concentration of solute
- Answer: B) High concentration of solute
- What effect does the addition of a non-volatile solute have on the boiling point of a solution?
- A) Decreases the boiling point
- B) Increases the boiling point
- C) No effect on the boiling point
- D) Fluctuates the boiling point
- Answer: B) Increases the boiling point
- Which factor most significantly affects the freezing point depression of a solution?
- A) The color of the solute
- B) The concentration of solute particles
- C) The volume of the solution
- D) The density of the solute
- Answer: B) The concentration of solute particles
- What is the effect of adding a solute to a solvent on the freezing point of the solution?
- A) The freezing point increases
- B) The freezing point decreases
- C) The freezing point remains constant
- D) The freezing point fluctuates
- Answer: B) The freezing point decreases
- Which of the following statements best describes an ideal solution?
- A) A solution that obeys Raoult’s law at all concentrations.
- B) A solution that exhibits unusual colligative properties.
- C) A solution where solute-solvent interactions are stronger than solute-solute interactions.
- D) A solution where solute-solvent interactions are weaker than solvent-solvent interactions.
- Answer: A) A solution that obeys Raoult’s law at all concentrations.
- Which property of a solution is not considered a colligative property?
- A) Boiling point elevation
- B) Freezing point depression
- C) Osmotic pressure
- D) Color change
- Answer: D) Color change
- Which solution would exhibit the lowest osmotic pressure?
- A) 0.1 M NaCl
- B) 0.1 M KCl
- C) 0.1 M Glucose
- D) 0.1 M Na2SO4
- Answer: C) 0.1 M Glucose
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