Factors Influencing Solubility and Dissolving Rates

Mrs. Bodishon explains solubility, focusing on factors affecting the rate of dissolving, such as temperature, agitation, solute size, and pressure. She highlights differences in dissolving gases compared to solids and liquids, emphasizing the role of temperature and pressure. The video also covers solubility graphs and rules, including the behavior of polar and nonpolar substances.

What is solubility?

• The amount of solvent that can dissolve in a solute

• The amount of solute that can dissolve in a solvent

• The temperature at which a solute dissolves

• The speed at which a solute dissolves

Which factor does NOT affect the rate of dissolving?

• Color of the solute

• Agitation

• Temperature

• Size of the solute

How does agitation affect the rate of dissolving?

• It changes the solute's color

• It decreases the rate

• It has no effect

• It increases the rate

Why does a crushed solute dissolve faster than a whole one?

• It has a larger surface area

• It is heavier

• It is more colorful

• It is less dense

What happens to gas solubility as temperature decreases?

• It decreases

• It remains the same

• It increases

• It becomes zero

How does pressure affect the solubility of gases?

• Pressure has no effect

• Lower pressure increases solubility

• Higher pressure decreases solubility

• Higher pressure increases solubility

What is the solubility trend for gases as temperature increases?

• Solubility decreases

• Solubility increases

• Solubility becomes zero

• Solubility remains constant

Which substances can dissolve in polar substances?

• Polar substances

• Neither polar nor nonpolar substances

• Nonpolar substances

• Both polar and nonpolar substances

What happens when polar and nonpolar substances are mixed?

• They react chemically

• They remain separate and form layers

• They form a homogeneous mixture

• They dissolve completely

Which of the following is an example of a heterogeneous mixture?

• Salt in water

• Oil in water

• Sugar in tea

• Vinegar in water