#1
Which of the following substances is typically considered the universal solvent?
Water
ExplanationWater is known as the universal solvent due to its ability to dissolve a wide range of substances.
#2
What is the process called when a solid dissolves in a liquid?
Dissolution
ExplanationDissolution is the process where a solid substance mixes evenly with a liquid to form a solution.
#3
What is the process called when a gas changes into a liquid?
Condensation
ExplanationCondensation is the transition of a gas phase into a liquid phase.
#4
What is the term for a solution that contains the maximum amount of solute that can dissolve at a given temperature?
Saturated
ExplanationA saturated solution is in equilibrium with undissolved solute at a given temperature.
#5
What is the term for a solution that has a higher concentration of solute compared to another solution?
Concentrated
ExplanationA concentrated solution contains a relatively high amount of solute compared to the amount of solvent.
#6
Which of the following factors affects the solubility of a gas in a liquid?
Pressure
ExplanationPressure has a direct impact on the solubility of gases in liquids; increasing pressure typically increases solubility.
#7
What does 'like dissolves like' mean in the context of solubility?
Polar solutes dissolve in polar solvents
Explanation'Like dissolves like' refers to the tendency of substances with similar polarity to dissolve in each other.
#8
What is the term used to describe a solution that has reached its maximum solute concentration at a given temperature?
Saturated
ExplanationA saturated solution contains the maximum amount of solute that can dissolve at a given temperature.
#9
Which of the following factors does NOT affect the solubility of a solid solute in a liquid solvent?
Pressure
ExplanationPressure generally has minimal effect on the solubility of solid solutes in liquid solvents.
#10
What is the molarity of a solution containing 0.5 moles of solute dissolved in 2 liters of solvent?
0.5 M
ExplanationMolarity is calculated by dividing the moles of solute by the volume of solution in liters.
#11
Which of the following factors does NOT affect the solubility of a gas in a liquid?
Particle size
ExplanationThe size of gas particles does not significantly influence their solubility in liquids.
#12
Which of the following factors does NOT typically increase the rate of dissolution?
Decreasing temperature
ExplanationDecreasing temperature usually slows down dissolution processes.
#13
What does the term 'miscible' refer to in the context of solubility?
The ability of two liquids to mix and form a homogeneous solution
ExplanationMiscible liquids can dissolve completely in each other to form a single phase.
#14
Which of the following statements is true regarding the solubility of gases in liquids?
Solubility increases with increasing pressure
ExplanationAccording to Henry's law, solubility of gases in liquids is directly proportional to the pressure exerted on the gas.
#15
What does Henry's law describe?
The relationship between pressure and solubility of gases
ExplanationHenry's law explains how the concentration of a gas in a liquid is directly proportional to the partial pressure of that gas.
#16
What does the term 'colligative properties' refer to in the context of solutions?
Properties that depend on the total number of solute particles in a solution
ExplanationColligative properties such as boiling point elevation and freezing point depression depend on the number of solute particles in solution, not their identity.
#17
Which of the following substances would be least soluble in water?
C6H14
ExplanationC6H14 is a nonpolar molecule and is least likely to dissolve in water, which is a polar solvent.