QUIZ 1. What is the application of Raoult’s law of solutions in non-ideal solutions? a. It can determine the kinetic energy of the solutes in solution. b. It can determine the actual concentration of solutes in solution. c. It can determine the enthalpy of a solution versus the pure solvent. d. The law cannot be applied to any non-ideal solution. Answer: d. While Raoult’s law can determine the vapor pressure of a solute as an expression of its mole fraction, this is not true of non-ideal solutions so it cannot be applied to real solutions in chemistry. 2. What is the behavior of the vapor pressure of a solution versus the pure solvent in chemistry? a. The vapor pressure of a solution will increase with increased solutes in solution. b. The total vapor pressure of the solution will stay the same in a solution versus the pure solvent. c. The total vapor pressure of a solution will decrease versus vapor pressure of the pure solvent. d. There is equal effect on the vapor pressure of different solutes, regardless of their relative concentrations. Answer: c. The total vapor pressure of a solution will decrease versus the vapor pressure of the pure solvent in solution chemistry.
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