On-level Solutions, Solubility, Concentration Quiz

What is the dilution equation?

• M = V/M₂

• M₁V₁= M₂V₂

• M₁/V₁= M₂/V₂

• M₁ + M₂= V₁ + V₂

If you take 400 mL a 4.0 M HCl stock solution to make 500 mL of a new solution, what is the molarity?

• 2 M

• 0.1 M

• 3.2 M

• 1 M

A student dissolves sodium chloride, NaCl, in distilled water. Which word BEST describes the water in this situation?

• reactant

• solution

• solute

• solvent

Which of the following expresses solution concentration in terms of moles per liter?

• Molarity

• Molality

• Solubility

• Molar Volume

A 3.0 M HCl (aq) solution contains a total of--

• 3.0 moles of HCl per mole of water

• 3.0 grams of HCl per mole of solution

• 3.0 grams of HCl per liter of water.

• 3.0 moles of HCl per liter of solution

When 20. mL of 17.0 M HCl is diluted to a total volume of 60. mL, what is the concentration of the new solution?

A student adds solid KCl to water in a flask. The flask is sealed with a stopper and thoroughly shaken until no more solid KCl is seen. The solution in the flask is--

• Super Saturated

• Saturated

• Unsaturated

Identify if the following solution would be saturated, unsaturated, or supersaturated: 103 g KBr at 70'C.

• unsaturated

• saturated

• supersaturated

Identify a method to decrease the dissolving rate of a solution (make it dissolve slower):

• decrease the temperature

• stir the solution

• increase the temperature

• increase the particle size

Identify how many grams of KNO₃ are required to make a saturated solution at 40°C.

• 57 g

• 95 g

• 78 g

• 42 g