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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Describe how Raoult's Law is used to determine the molar mass of a non-volatile solute.
Describe the effect of adding a non-volatile solute to a solvent on its vapor pressure.
Describe the main difference between ideal and non-ideal solutions with respect to Raoult's Law.
Describe the relationship between Raoult's Law and Dalton's Law of Partial Pressures.
A binary solution of A and B has xA = 0.4, PA0 = 100 mmHg, and PB0 = 60 mmHg. Calculate the total vapor pressure of the solution.
A binary solution of liquids A and B has mole fractions xA = 0.3 and xB = 0.7. The vapor pressures of pure A and B are 120 mmHg and 80 mmHg, respectively. Calculate the partial vapor pressure of B.
A solution contains 0.1 mol of non-volatile solute and 0.9 mol of solvent. If the vapor pressure of pure solvent is 40 mmHg, what is the 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 solution?
Which of the following is a consequence of Raoult's Law? (1) Boiling point elevation (2) Freezing point depression (3) Osmotic pressure (4) All of the above
Which of the following is a necessary condition for a solution to be considered ideal? (1) No enthalpy change on mixing (2) No volume change on mixing (3) Intermolecular forces between unlike molecules equal those between like molecules (4) All of the above
Which of the following is an example of a solution showing positive deviation from Raoult's Law? (1) Acetone and Carbon disulfide (2) Chloroform and Acetone (3) Benzene and Toluene (4) Water and Nitric acid
Which of the following is NOT a colligative property? (1) Vapor pressure lowering (2) Boiling point elevation (3) Color change (4) Freezing point depression
Fill in the blank: A solution that obeys Raoult's Law at all concentrations is called an ______ solution.
Fill in the blank: According to Raoult's Law, the total vapor pressure of an ideal binary solution is the ______ of the partial vapor pressures of the components.
Fill in the blank: The deviation from Raoult's Law is called ______ deviation when the observed vapor pressure is lower than predicted.
Fill in the blank: The partial vapor pressure of a component in a solution is directly proportional to its ______ in the solution.
True or False: Raoult's Law can be used to determine the composition of vapor above a liquid solution.
True or False: Raoult's Law can be used to explain the colligative property of osmotic pressure.
True or False: Raoult's Law is applicable to both volatile and non-volatile solutes.
True or False: The mole fraction of a component in the vapor phase is always equal to its mole fraction in the liquid phase for an ideal solution.
