Titration Techniques and Principles

This video tutorial by Jared Hyman, an assistant professor of chemistry, covers the proper technique for titration using a single burette assembly kit. It explains the purpose of titration, which is to determine the concentration of an unknown solution by adding a titrant. The video details the necessary equipment, including a burette, Erlenmeyer flask, and pipette, and provides a step-by-step guide on preparing the burette and performing the titration. It emphasizes the importance of accuracy and reading the burette correctly. The tutorial concludes with a summary and a preview of the next video in the series.

What is the main purpose of a titration?

• To measure the temperature of a solution

• To mix two solutions together

• To determine the concentration of an unknown solution

• To change the color of a solution

Which piece of equipment is used to add the titrant in a titration?

• Volumetric pipette

• Beaker

• Erlenmeyer flask

• Burette

Why is an Erlenmeyer flask preferred for titrations?

• It allows for vigorous swirling and minimizes spills

• It is easier to clean

• It has a larger capacity

• It is cheaper than other glassware

What is the first step in preparing a burette for titration?

• Rinsing it with deionized water

• Filling it with titrant

• Checking for air bubbles

• Mounting it on a ring stand

What should be done if air bubbles are present in the burette?

• Remove the burette from the stand

• Add more titrant

• Tap the burette gently to release them

• Ignore them

How should the volume on a burette be read?

• From any angle

• From the side of the burette

• From the bottom of the meniscus at eye level

• From the top of the meniscus

What is the significance of the meniscus in a titration?

• It indicates the temperature of the solution

• It helps in determining the correct volume reading

• It shows the endpoint of the titration

• It is used to measure the pH of the solution

What should be done if the analyte remains colorless after adding titrant?

• Add more indicator

• Repeat the steps of adding a drop, rinsing, swirling, and recording

• Increase the flow of titrant

• Change the titrant

What is the desired endpoint in a titration?

• A brightly colored solution

• A dark colored solution

• A colorless solution

• A pale, faintly colored analyte

Why is it important to perform titrations in triplicate?

• To ensure accuracy and reliability of results

• To use up all the titrant

• To practice the technique

• To save time