Solutions Review

What is the molarity of a 9.79 L solution that contains 0.400 mol HCl?

• 0.0133 M

• 0.0409 M

• 0.959 M

• 5.67 M

When preparing a solution, the substance that is to be dissolved is called—

• a solid

• a liquid

• the solvent

• the solute

Any substance that does not conduct electricity when in solution is called a(n) ?

• nonelectrolyte

• electrolyte

• conductor

• semiconductor

Refer to the above graph. 90 grams of sodium nitrate (NaNO3) are put into 100 grams of water and stirred. The

final mixture has a temperature of 20°C.

About how many grams of the sodium nitrate dissolved?

• 23

• 73

• 80

• 88

Refer to the graph above. In order to have a saturated solution, how many grams of potassium nitrate, KNO3,

need to be dissolved in 100 grams of water at 20°C.

• 20

• 30

• 60

• 100

Students are asked to make statements about the solubility graph above. Which student does the best job of

communicating the general features of the graph?

• Student A. Most salts require 100 grams of water in order to dissolve completely.

• Student B. Table salt has the average solubility of all salts.

• Student C. The solubility of most salts increases with increasing temperature.

• Student D. Most curves show a decreasing slope as the temperature rises.

According to the graph above, which salt has a solubility curve which resembles the behavior of gasses in

solution?

• KNO₃

• Ce₂(SO₄)₃

• KClO₃

• K₂Cr₂O₇

What is the name of the process by which a crystalline solid is reduced to separately solvated ions in solution?

• Deionization

• Dissociation

• Association

• Saturation

A solution that contains the maximum amount of solute that is soluble at a given temperature is said to be—

• unsaturated

• saturated

• supersaturated

• diluted

Which of the following would result in being able to dissolve a greater amount of gas in a solution?

• Cool the gas and solution

• Make the gas an electrolyte

• Heat the gas and solution

• Decrease the pressure of the solution