Molarity and Dilution Quiz

What is the primary focus of this lesson in terms of measuring concentration?

• Molality

• Molarity

• Percent Composition

• Normality

Which of the following is the correct expression for molarity?

• Moles of solute per mole of solvent

• Grams of solute per liter of solution

• Moles of solute per liter of solution

• Moles of solute per kilogram of solvent

If you know the molarity and volume of a solution, what can you determine?

• The pressure of the solution

• The moles of solute

• The temperature of the solution

• The density of the solution

How would you prepare 500 mL of a 0.25 M NaOH solution?

• By dissolving 10 grams of NaOH in 1 liter of water

• By dissolving 10 grams of NaOH in 500 mL of water

• By dissolving 5 grams of NaOH in 500 mL of water

• By dissolving 5 grams of NaOH in 1 liter of water

What is the purpose of using a volumetric flask in solution preparation?

• To measure pressure accurately

• To mix solutions thoroughly

• To ensure precise volume measurement

• To measure temperature accurately

In a dilution, what remains constant?

• Concentration of solute

• Volume of solvent

• Volume of solution

• Number of moles of solute

What is the dilution equation used for?

• Finding the initial volume of solvent

• Determining the final concentration after dilution

• Calculating the density of a solution

• Measuring the temperature change during dilution

If 50 mL of 3.0 M HCl is diluted to 300 mL, what is the final concentration?

• 1.5 M

• 1.0 M

• 0.5 M

• 2.0 M

To what final volume must 20 mL of 0.40 M NaCl be diluted to achieve a 0.08 M solution?

• 50 mL

• 100 mL

• 150 mL

• 200 mL

What happens to the concentration of a solution if its volume is increased six-fold?

• It doubles

• It remains the same

• It increases six-fold

• It decreases six-fold