Raoult's Law and Its Applications
Chemistry ⇒ Solutions and Colloids
Raoult's Law and Its Applications starts at 11 and continues till grade 12.
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A solution of acetone and chloroform shows a vapor pressure lower than predicted by Raoult's Law. What does this indicate about the interactions between acetone and chloroform molecules?
A solution shows a total vapor pressure higher than predicted by Raoult's Law. What type of deviation is this?
Describe a real-life application of Raoult's Law.
Describe how Raoult's Law is modified for solutions containing volatile solutes.
A binary solution contains 0.4 mol of A (P*A = 80 mmHg) and 0.6 mol of B (P*B = 60 mmHg). Calculate the total vapor pressure of the solution.
A solution contains 0.2 mol of solute and 0.8 mol of solvent. If the vapor pressure of pure solvent is 50 mmHg, what is the vapor pressure of the solvent in the solution?
A solution contains 0.3 mol of solute and 0.7 mol of solvent. If the vapor pressure of pure solvent is 70 mmHg, what is the relative lowering of vapor pressure?
A solution is made by dissolving 10 g of a non-volatile solute in 90 g of water. If the vapor pressure of pure water is 40 mmHg and the mole fraction of water is 0.95, calculate the vapor pressure of water in the solution.
Which of the following is a consequence of Raoult's Law? (1) Osmotic pressure (2) Lowering of vapor pressure (3) Increase in freezing point (4) Decrease in boiling point
Which of the following is a limitation of Raoult's Law? (1) It applies to all solutions. (2) It applies only to ideal solutions. (3) It applies only to non-volatile solutes. (4) It applies only to electrolytes.
Which of the following is NOT a colligative property? (1) Lowering of vapor pressure (2) Boiling point elevation (3) Freezing point depression (4) Density
Which of the following is NOT a requirement for a solution to obey Raoult's Law? (1) Similar size of solute and solvent molecules (2) Similar intermolecular forces (3) Complete miscibility (4) Presence of strong electrolytes
Fill in the blank: According to Raoult's Law, the partial vapor pressure of component B in a binary solution is given by PB = _______ × PB*.
Fill in the blank: The lowering of vapor pressure is a _______ property.
Fill in the blank: The mole fraction of a component in a solution is defined as the number of moles of the component divided by the _______ number of moles of all components.
Fill in the blank: The partial vapor pressure of a component in a solution depends on its mole fraction and its _______ vapor pressure.
True or False: In an ideal solution, enthalpy of mixing is zero.
True or False: Raoult's Law can be used to calculate the boiling point elevation of a solution.
True or False: Raoult's Law can be used to determine the molar mass of an unknown solute.
True or False: Raoult's Law is strictly applicable only to ideal solutions.
