Solutions

Which of the following usually makes a substance dissolve faster in a solvent?

• agitating the solution

• increasing the particle size of the solute

• lowering the temperature

• decreasing the number of particles

What is the maximum amount of KCl that can dissolve in 200 g of water?

(The solubility of KCl is 34 g/100 g H2O at 20C.)

• 17 g

• 34 g

• 68 g

• 6900g

What is the solubility of silver nitrate if only 11.1 g can dissolve in 5.0 g of water at 20 degrees C?

• 2.2 g/ 100 g H₂O

• 45 g/ 100 g H₂O

• 22.2 g/ 100 g H₂O

• 222 g/ 100 g H₂O

Which of the following expressions is generally used for solubility?

• grams of solute per 100 grams of solvent

• grams of solute per 100 milliliters of solvent

• grams of solute per 100 grams of solution

• grams of solute per 100 milliliters of solution

Which of the following pairs of factors affects the solubility of a particular substance?

• temperature and the nature of solute and solvent

• temperature and degree of mixing

• particle size and degree of mixing

• particle size and temperature

If a crystal added to an aqueous solution causes many particles to come out of solution, the solution was

• unsaturated

• saturated

• an emulsion

• supersaturated

Which of the following substances is less soluble in hot water than in cold water?

• Carbon dioxide

• sodium chloride

• sodium nitrate

• potassium bromide

Which of the following occurs as temperature increases?

• Solubility decreases.

• Solubility increases.

• Solubility remains the same.

• Molarity doubles.

The solubility of a gas in a liquid is ____.

• proportional to the square root of the pressure of the gas above the liquid

• directly proportional to the pressure of the gas above the liquid

• inversely proportional to the pressure of the gas above the liquid

• unrelated to the pressure of the gas above the liquid

What happens to the solubility of a gas, in a liquid, if the partial pressure of the gas above the liquid decreases?

• The solubility decreases.

• The solubility increases.

• The solubility remains the same.

• The solubility cannot be determined.