Understanding Titrations

What is the primary goal of a titration?

• To separate mixtures into pure substances

• To measure the pH of a solution

• To create a new chemical compound

• To determine the concentration of an unknown solution

Which piece of equipment is used to dispense measured amounts of liquid in a titration?

• Graduated cylinder

• Beaker

• Pipette

• Burette

What is the role of an Erlenmeyer flask in a titration?

• To contain the analyte and allow mixing without splashing

• To hold the titrant

• To heat the solution

• To measure the pH of the solution

What indicates the completion of a neutralization reaction in a titration?

• A color change occurs

• The solution reaches a boiling point

• The solution becomes clear

• The solution emits a gas

What is the equivalence point in a titration?

• The point where stoichiometrically equivalent quantities of acid and base are present

• The point where the pH is neutral

• The point where the solution changes color

• The point where the solution reaches its boiling point

Why is it important to accurately measure the volume of titrant used?

• To maintain the temperature of the solution

• To prevent the solution from boiling

• To determine the exact concentration of the analyte

• To ensure the solution is mixed properly

What happens if you add too much titrant and pass the endpoint?

• The solution emits a gas

• The solution becomes basic and the dye turns dark pink

• The solution becomes acidic

• The solution remains colorless

In the example problem, what is the first step in calculating the concentration of HCl?

• Add more titrant to the solution

• Measure the temperature of the solution

• Calculate the pH of the solution

• Convert the volume of titrant to liters

What is the mole ratio of sodium hydroxide to hydrochloric acid in the example problem?

• 1:2

• 2:1

• 3:1

• 1:1

What is the final concentration of HCl determined in the example problem?

• 1.5 M

• 2.7 M

• 3.0 M

• 4.5 M