Factors Influencing Solubility Rates

What must occur for solute and solvent molecules to dissolve?

• They must be in a liquid state.

• They must be of the same chemical composition.

• They must collide with proper energy and orientation.

• They must be heated to a certain temperature.

What effect does stirring have on the dissolving rate of a solid solute?

• Has no effect on the dissolving rate

• Decreases the solute's temperature

• Decreases the rate of dissolving

• Increases the rate of dissolving

How does increasing the temperature of the solvent affect the dissolving rate of a solid solute?

• Increases the rate of dissolving

• Decreases the rate of dissolving

• Makes the solute insoluble

• Has no effect on the dissolving rate

What happens to the solubility of a gas in a solution when the temperature is increased?

• Decreases

• Remains the same

• Increases

• Becomes unpredictable

How does increasing pressure affect the solubility of a gaseous solute?

• Only affects the color of the solution

• Has no effect on solubility

• Increases solubility

• Decreases solubility

Which principle explains why polar solvents dissolve polar solutes?

• Like dissolves like

• Collision theory

• Surface area principle

• Pressure solubility rule

Would ammonia (NH3) be more soluble in water or toluene?

• Water, because both are polar

• Toluene, because it is nonpolar

• Equally soluble in both

• Insoluble in both

Is methane gas more soluble in water or benzene?

• Water, because it is polar

• Benzene, because it is nonpolar

• Equally soluble in both

• Insoluble in both

Are vegetable oil and water miscible or immiscible?

• Immiscible

• Miscible

• Partially miscible

• Only miscible at high temperatures

What does the immiscibility of vegetable oil and water imply about their polarities?

• Polarity is not a factor in miscibility

• Both are polar

• Both are nonpolar

• One is polar and the other is nonpolar