7.6E Rate of Dissolution

What is an example of a solid solute that dissolves quickly in hot water?

• Salt

• Sugar

• Flour

• Sand

What happens to the rate of dissolution when ice is added to hot tea?

• Adding ice increases the temperature, which speeds up the rate of dissolution.

• Adding ice decreases the temperature, which slows down the rate of dissolution.

• Adding ice has no effect on the rate of dissolution.

• Adding ice makes the tea dissolve faster.

What is a concentrated solution?

• A solution with a low amount of solute relative to the solvent.

• A solution that contains only one type of solute.

• A concentrated solution has a high amount of solute relative to the amount of solvent.

• A solution that is saturated with solute.

What is a saturated solution?

• A solution that contains more solute than can be dissolved at a given temperature and pressure.

• A solution in which no more solute can dissolve at a given temperature and pressure.

• A solution that has reached its boiling point.

• A solution that contains only one type of solute.

How does temperature affect the rate of dissolution?

• Higher temperatures decrease the rate of dissolution because particles move slower.

• Higher temperatures generally increase the rate of dissolution because particles move faster and collide more often.

• Temperature has no effect on the rate of dissolution.

• Lower temperatures increase the rate of dissolution due to reduced particle movement.

How does the size of solute particles affect the rate of dissolution?

• Smaller solute particles have a larger surface area relative to their volume, which increases the rate of dissolution.

• Larger solute particles dissolve faster due to their weight.

• The size of solute particles has no effect on the rate of dissolution.

• Smaller solute particles dissolve slower because they are less stable.

What is agitation in the context of dissolution?

• Agitation refers to the temperature at which a solute dissolves.

• Agitation is the process of cooling a solution to enhance solubility.

• Agitation refers to stirring or shaking a solution to help mix the solute and solvent, increasing the rate of dissolution.

• Agitation is the measurement of the concentration of a solute in a solution.

What is surface area in relation to solutes?

• Surface area refers to the total volume of a solute in a solution.

• Surface area is the amount of solute that can be dissolved in a solvent.

• Surface area refers to the exposed area of a solute that is available to interact with the solvent; greater surface area leads to faster dissolution.

• Surface area is the measure of the mass of solute in a given volume of solvent.

What factors affect the rate of dissolution?

• Temperature, agitation, surface area of the solute, and the nature of the solute and solvent.

• Only temperature and agitation are important.

• The color of the solute and the size of the container.

• The pressure of the environment and the time of exposure.

What is the rate of dissolution?

• The speed at which a solute dissolves in a solvent to form a solution.

• The temperature at which a solute can no longer dissolve in a solvent.

• The amount of solute that can dissolve in a given volume of solvent.

• The time it takes for a solution to reach equilibrium.