Colligative Properties of Solutions
Chemistry ⇒ Solutions and Colloids
Colligative Properties of Solutions starts at 11 and continues till grade 12.
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Define the term 'colligative property'.
Describe the effect of adding a non-volatile solute on the vapor pressure of a solvent.
Describe the process of reverse osmosis and its application.
Explain the term 'abnormal molar mass' in the context of colligative properties.
A 0.2 molal solution of KCl is prepared. Assuming complete dissociation, what is the van't Hoff factor (i) for KCl?
A 0.5 molal solution of a non-electrolyte in benzene (Kf = 5.12 K kg/mol) lowers the freezing point by _______ K.
A solution containing 0.1 mol of a non-volatile solute in 1 kg of water has a freezing point of -0.186°C. What is the Kf of water?
A solution containing 0.1 mol of NaCl in 1 kg of water freezes at -0.372°C. Calculate the van't Hoff factor (i) if Kf for water is 1.86 K kg/mol.
Which colligative property is most useful for determining the molar mass of a polymer? (1) Boiling point elevation (2) Freezing point depression (3) Osmotic pressure (4) Vapor pressure lowering
Which of the following is a correct statement about colligative properties? (1) They depend on the chemical nature of the solute (2) They depend on the number of solute particles (3) They depend on the color of the solute (4) They depend on the size of the solute particles
Which of the following is a semipermeable membrane? (1) Cellophane (2) Glass (3) Plastic (4) Metal foil
Which of the following is NOT a colligative property? (1) Boiling point elevation (2) Freezing point depression (3) Osmotic pressure (4) Viscosity
Colligative properties depend on the _______ of solute particles and not their nature.
Osmosis is the movement of solvent molecules from a region of _______ concentration to a region of _______ concentration through a semipermeable membrane.
The boiling point of pure water is 100°C. If 1 mol of a non-volatile solute is dissolved in 1 kg of water, the boiling point will be _______ than 100°C.
The depression in freezing point (ΔTf) is given by the formula ΔTf = _______ × Kf × m.
True or False: The addition of a non-volatile solute to a solvent increases the vapor pressure of the solution.
True or False: The boiling point elevation is a colligative property.
True or False: The depression in freezing point is a colligative property.
True or False: The elevation in boiling point is directly proportional to the molality of the solution.
