Review on Solutions

Which compound is insoluble in water?

• calcium bromide

• potassium bromide

• silver bromide

• sodium bromide

An unsaturated aqueous solution of NH₃ is at 90°C in 100. grams of water. According to Reference Table G, how many grams of NH₃ could this unsaturated solution contain?

• 5.0 g

• 10. g

• 15 g

• 20. g

Based on Reference Table G, what change will cause the solubility of KNO₃(s) to increase?

• increasing the pressure

• decreasing the pressure

• increasing the temperature

• decreasing the temperature

At which temperature can water contain the most dissolved oxygen at a pressure of 1 atmosphere?

• 10.ºC

• 20.ºC

• 30.ºC

• 40.ºC

A solute is added to water and a portion of the solute remains undissolved. When equilibrium between the dissolved and undissolved solute is reached, the solution must be

• dilute

• saturated

• unsaturated

• supersaturated

What is the molarity of a solution containing 20. grams of NaOH in 0.50 liter of solution?

• 1.0 M

• 2.0 M

• 0.50 M

• 10. M

What is the concentration expressed in parts per million of a solution containing 30.0 grams of NaNO₃ in 70.0 grams of H₂O?

• 4.29 × 10⁵ ppm

• 3.00 × 10⁵ ppm

• 2.33 × 10⁶ ppm

• 3.33 × 10⁶ ppm

What is the total mass of solute in 1000. grams of a solution having a concentration of 5 parts per million?

• 0.005 g

• 0.05 g

• 0.5 g

• 5 g

As a solute is added to a solvent, what happens to the freezing point and the boiling point of the solution?

• The freezing point decreases and the boiling point decreases.

• The freezing point decreases and the boiling point increases.

• The freezing point increases and the boiling point decreases.

• The freezing point increases and the boiling point increases.

Compared to a 0.1 M aqueous solution of NaCl, a 0.8 M aqueous solution of NaCl has a

• higher boiling point and a higher freezing point

• higher boiling point and a lower freezing point

• lower boiling point and a higher freezing point

• lower boiling point and a lower freezing point