#1
Which of the following is a colligative property of a solution?
Boiling point elevation
ExplanationDepends on the number, not the identity, of solute particles.
#2
What is the concentration unit typically used to express the concentration of a solution in terms of moles of solute per liter of solution?
Molarity
ExplanationMoles of solute per liter of solution.
#3
Which of the following is NOT a colligative property of a solution?
Density
ExplanationColligative properties depend on the number, not the identity, of solute particles.
#4
What is the process by which a solute dissolves in a solvent?
Dissolution
ExplanationSolute particles disperse uniformly in solvent.
#5
What is the term for the process of separating the components of a solution using a semipermeable membrane?
Dialysis
ExplanationSelective permeability to separate particles.
#6
Which of the following is NOT a characteristic of an ideal solution?
Positive deviation from Raoult's law
ExplanationFollows Raoult's Law exactly.
#7
Which of the following factors affects the rate of dissolution of a solute in a solvent?
All of the above
ExplanationTemperature, surface area, agitation.
#8
What is the term used to describe a solution that has reached its maximum concentration of solute at a given temperature?
Saturated solution
ExplanationContains maximum dissolved solute at a given temperature.
#9
Which of the following is an example of a non-electrolyte solute?
Sucrose (C12H22O11)
ExplanationDoes not dissociate into ions when dissolved.
#10
What is the term used to describe the separation of a mixture based on the differences in the boiling points of its components?
Distillation
ExplanationBoiling and condensation to separate components.
#11
What is the formula for calculating molality?
mol/kg
ExplanationMoles of solute per kilogram of solvent.
#12
What is the process of converting a solution from a higher to a lower concentration called?
Dilution
ExplanationDecreasing concentration of solute.
#13
Which law describes the relationship between the vapor pressure of a solution and the mole fraction of the solvent?
Raoult's Law
ExplanationVapor pressure of solution = mole fraction of solvent × vapor pressure of pure solvent.
#14
Which of the following statements about Henry's Law is FALSE?
It is independent of temperature.
ExplanationSolubility is affected by temperature.
#15
Which of the following is an example of a heterogeneous mixture?
Sand and iron filings
ExplanationComponents not uniformly distributed.
#16
Which of the following statements about osmosis is TRUE?
It involves the movement of solvent molecules from a region of lower solute concentration to a region of higher solute concentration
ExplanationEqualizing solute concentrations through a semi-permeable membrane.
#17
What is the term for a solution that can dissolve more solute at a given temperature?
Supersaturated solution
ExplanationContains more solute than expected at that temperature.