Titration Process and Techniques

The video tutorial demonstrates a titration experiment using 3% hydrogen peroxide and potassium permanganate. It covers the setup of equipment, preparation of reactants, and the titration process. The goal is to determine the accuracy of the 3% concentration by observing color changes to identify the equivalence point. The video explains the significance of the equivalence and end points, and concludes with final observations.

What is the main objective of the titration experiment discussed in the video?

• To determine the molarity of sulfuric acid

• To verify the concentration of hydrogen peroxide

• To measure the temperature change during the reaction

• To identify the color change of potassium permanganate

Which piece of equipment is used to hold the buret in place during the experiment?

• Erlenmeyer flask

• Ring stand

• Hot plate

• Stir bar

Why is a white piece of paper placed on the stir plate?

• To absorb excess heat

• To enhance visibility of color change

• To stabilize the equipment

• To prevent spills

What is the purpose of adding sulfuric acid in excess during the titration?

• To prevent manganese from forming manganese dioxide

• To neutralize the solution

• To increase the reaction rate

• To dilute the potassium permanganate

What indicates that the equivalence point has been reached during the titration?

• The solution becomes completely clear

• The solution starts to boil

• The solution turns blue

• A single drop changes the solution from colorless to pink

What does it mean if the color of the solution persists during the titration?

• There is an excess of peroxide

• All the peroxide has reacted

• The reaction is incomplete

• The solution is too hot

What should be done if the potassium permanganate is too dark to read the bottom of the meniscus?

• Read the top of the meniscus

• Increase the temperature

• Dilute the solution

• Use a different indicator

What is the role of the stir bar in the titration process?

• To heat the solution

• To mix the solution evenly

• To indicate the endpoint

• To measure the volume

What should be done if the color change is not observed after adding potassium permanganate?

• Add more sulfuric acid

• Increase the temperature

• Continue adding potassium permanganate

• Stop the experiment

What is the final step after reaching the equivalence point in the titration?

• Add more sulfuric acid

• Cool the solution

• Read the final volume measurement

• Add more peroxide