Solutions Unit Test

Front

What happens to the solubility of gases as you increase the temperature?

Back

The solubility of gases decreases as temperature increases.

Front

What is boiling point elevation?

Back

Boiling point elevation is the increase in the boiling point of a solvent when a solute is added, calculated using the formula: ΔT_b = i * K_b * m.

Front

What is the formula to calculate the amount of solute needed to prepare a diluted solution?

Back

C1V1 = C2V2, where C1 is the concentration of the stock solution, V1 is the volume of the stock solution needed, C2 is the concentration of the diluted solution, and V2 is the volume of the diluted solution.

Front

What is the boiling point elevation of a solution containing 2.0 mol of KCl in 1.0 kg of water? (Kb for water = 0.512 °C kg/mol)

Back

1.54 °C.

Front

What indicates that a solution is acidic when tested with litmus paper?

Back

A solution that turns blue litmus paper red is acidic.

Front

What is the pH range of acidic solutions?

Back

The pH range of acidic solutions is less than 7.

Front

What is the molarity of a solution?

Back

Molarity (M) is defined as the number of moles of solute per liter of solution.

Front

How do you prepare a diluted solution from a concentrated solution?

Back

To prepare a diluted solution, use the formula C1V1 = C2V2 to calculate the volume of the concentrated solution needed.

Front

What is the relationship between temperature and the solubility of solids in liquids?

Back

The solubility of most solids in liquids increases as the temperature increases.

Front

What is the definition of a base in terms of pH?

Back

A base is a substance that has a pH greater than 7.