Vapor Pressure of Solutions
Chemistry ⇒ Solutions and Colloids
Vapor Pressure of Solutions starts at 11 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Vapor Pressure of Solutions.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 12
Define vapor pressure in the context of solutions.
Describe how Raoult's Law can be used to distinguish between ideal and non-ideal solutions.
Describe the difference between volatile and non-volatile solutes with respect to their effect on vapor pressure.
Describe the effect of temperature on the vapor pressure of a solution.
A binary solution of liquids A and B has mole fractions X_A = 0.3 and X_B = 0.7. The vapor pressures of pure A and B are 120 mmHg and 80 mmHg, respectively. Calculate the total vapor pressure of the solution.
A solution contains 0.5 mol of benzene (P⁰ = 100 mmHg) and 0.5 mol of toluene (P⁰ = 32 mmHg). Calculate the total vapor pressure of the solution assuming ideal behavior.
A solution contains 1 mol of NaCl dissolved in 1000 g of water. If the vapor pressure of pure water is 23.8 mmHg, estimate the vapor pressure of the solution. (Assume complete dissociation of NaCl)
A solution is made by dissolving 2 mol of a non-volatile solute in 98 mol of water. If the vapor pressure of pure water is 30 mmHg, what is the vapor pressure of the solution?
Which law relates the vapor pressure of an ideal solution to the mole fraction of its components? (1) Henry's Law (2) Raoult's Law (3) Dalton's Law (4) Boyle's Law
Which of the following best describes an ideal solution? (1) No enthalpy change on mixing (2) No volume change on mixing (3) Obeys Raoult's Law at all concentrations (4) All of the above
Which of the following is a consequence of vapor pressure lowering in solutions? (1) Boiling point elevation (2) Freezing point depression (3) Osmotic pressure increase (4) All of the above
Which of the following is NOT a colligative property? (1) Vapor pressure lowering (2) Boiling point elevation (3) Freezing point depression (4) Density increase
Fill in the blank: The lowering of vapor pressure depends only on the _______ of solute particles, not their nature.
Fill in the blank: The total vapor pressure of an ideal binary solution is the _______ of the partial vapor pressures of the components.
Fill in the blank: The vapor pressure of a solution is always _______ than that of the pure solvent when a non-volatile solute is added.
Raoult's Law states that the partial vapor pressure of each component in an ideal solution is equal to the product of the _______ of the component and its vapor pressure in the pure state.
True or False: In an ideal solution, the enthalpy of mixing is zero.
True or False: The vapor pressure of a solution can be used to determine the molar mass of a non-volatile solute.
True or False: The vapor pressure of a solution containing a volatile solute can be higher than that of the pure solvent.
True or False: The vapor pressure of a solution is always equal to the sum of the vapor pressures of the pure components.
