SPS6. Solutions, Acids, and Bases

Which term describes the substance that is being dissolved in a solution?

• Solute

• Solvent

• Conductivity

• Concentration

Tags

SPS6a

A maximum of 60g of KNO₃ dissolves in 100g of water at 40^oC. If 40g are stirred into 100mL of water, what type of solution will be formed?

• A saturated solution, because 40g is less than the maximum solubility at this temperature.

• An unsaturated solution, because 40g is less than the maximum amount that can dissolve at 40°C.

• A supersaturated solution, because more than the usual amount of solute has been dissolved.

•  A partially saturated solution, because only part of the solute will dissolve.

Tags

SPS6a

Which term describes the amount of solute present in a given amount of solvent?

• Solvent

• Concentration

• Solute

• Conductivity

Tags

SPS6a

Which solution will have the highest conductivity?

• Sugar solution, because sugar molecules dissociate into ions when dissolved in water.

• NaCl solution, because NaCl dissociates into ions, which allow the solution to conduct electricity.

• NaCl solution, because sugar solutions do not conduct electricity.

• Sugar solution, because sugar is a better conductor than NaCl.

Tags

SPS6a

This picture represents a supersaturated solution of sodium acetate. After the sodium acetate stops forming crystals, what is the remaining liquid?

• The remaining liquid is a supersaturated solution of sodium acetate in water.

• The remaining liquid will be a saturated solution of sodium acetate in water.

• The remaining liquid is an unsaturated solution of sodium acetate in water.

• The remaining liquid contains only water because the sodium acetate formed crystals.

Tags

SPS6a

How does temperature affect the rate at which solutes dissolve in a specific solvent?

• Temperature decreases the rate

• Higher temperature increases the rate

• Lower temperature increases the rate

• Temperature has no effect

Tags

SPS6b

How does surface area affect the rate at which solutes dissolve in a specific solvent?

• Larger surface area increases the rate

• Smaller surface area increases the rate

• Surface area has no effect

• Surface area decreases the rate

Tags

SPS6b

How does agitation affect the rate at which solutes dissolve in a specific solvent?

• Agitation decreases the rate

• Agitation increases the rate

• Agitation causes separation

• Agitation has no effect

Tags

SPS6b

What are ways to increase the rate of dissolving a solute? Select all that apply.

• Heat it

• Crush it

• Stir it

• Vaporize it

Tags

NGSS.HS-PS1-5

What does a solubility curve represent?

• The effect of temperature on solubility

• The effect of pressure on solubility

• The effect of concentration on solubility

• The effect of agitation on solubility

Tags

SPS6c