(Savvas 8.2) Ch 8.2 Solubility and Concentration

What is solubility?

• Solubility is a measure of the ability of a substance to dissolve in a solvent.

• Solubility is the process of a solid turning into a gas.

• Solubility is a measure of the ability of a substance to conduct electricity.

• Solubility is the process of a liquid freezing into a solid.

Tags

NGSS.MS-PS1-4

A solution that has less than the maximum amount of solute that can be dissolved is called a(n) ________________.

• unsaturated solution

• saturated solution

• supersaturated solution

• colloidal solution

Is the following sentence true or false? It is impossible for a solution to contain more solute than the solvent can hold at a given temperature.

• True

• False

Answer explanation

A supersaturated solution is a solution that contains more solute than it can theoretically hold at a given temperature. This is achieved by heating the solvent, dissolving more solute, and then slowly cooling the solution. The excess solute remains dissolved temporarily, creating an unstable state.

Which factors can affect the solubility of a solute? (Mark all that apply.)

• polarity of the solvent

• amount of solvent

• pressure

• temperature

What is a common guideline for predicting solubility?

• Like dissolves like.

• Opposites attract.

• All solids dissolve in water.

• Solubility is independent of polarity.

In general, the solubility of a solid increases as the solvent temperature ____________.

• increases

• decreases

• remains constant

Tags

NGSS.MS-PS1-4

In general, the solubility of a gas increases as the solvent temperature ____________.

• increases

• decreases

• remains constant

Tags

NGSS.MS-PS1-4

In general, the solubility of a gas increases as pressure ____________.

• increases

• decreases

• remains constant

• fluctuates

What does the concentration of a solution refer to?

• The amount of solute dissolved in a given amount of solvent or solution.

• The temperature at which a solution boils.

• The color of the solution.

• The pressure exerted by the solution.

This solution would be considered

• Unsaturated
• Supersaturated
• Saturated
• Undefined