How To Do Titrations | Chemical Calculations | Chemistry | FuseSchool

Summary

This video explains the process of titration, a method used to determine the concentration of an unknown solution by adding a known solution until the reaction is complete. The titration involves using a pipette to measure the unknown solution, a burette to add the known solution, and an indicator to signal the endpoint. The steps are outlined, including recording initial and final volumes, calculating the volume of solution used, and repeating the experiment for accuracy. The video also touches on the use of different indicators and the flexibility of titration, where either the acid or the alkali may be the known solution.

Takeaways

• 😀 A titration is a technique used to determine the concentration of an unknown solution by adding a known solution.
• 😀 The process involves carefully adding the known solution to the unknown solution until the reaction is complete.
• 😀 An indicator may be used to signal the end of the reaction, showing when the titration is complete.
• 😀 Titrations can be used for both acid-base reactions to find the concentration of acids or alkalis.
• 😀 The main apparatus for titrations include a pipette, burette, conical flask, and an indicator.
• 😀 A pipette is used to measure a set volume of the unknown solution into the flask.
• 😀 A burette is used to accurately add the known solution to the unknown solution, with precise measurements.
• 😀 The titration procedure includes steps like filling the burette, recording the volume, and adding the known solution slowly while mixing.
• 😀 After completing the titration, the final volume of the known solution added is calculated by subtracting the initial volume from the final reading.
• 😀 For accurate results, titrations should be repeated to get consistent values for the volume of solution used.

Q & A

What is a titration used for?

A titration is a technique used to determine the concentration of an unknown solution by adding a known solution until the reaction is complete.

What equipment is needed for a titration experiment?

The equipment needed for titration includes a pipette, a burette, a conical flask, and an indicator.

How do you measure the volume of the unknown solution in a titration?

You use a pipette to accurately measure a set volume of the unknown solution into the conical flask.

What is the role of the burette in a titration?

The burette is used to accurately measure and add the known solution to the unknown solution until the reaction is complete.

Why is it important to record the starting and final volume in a titration?

Recording the starting and final volumes helps calculate the volume of the solution added, which is crucial for determining the concentration of the unknown solution.

What is the purpose of using an indicator in a titration?

An indicator is used to signal the end of the reaction, often through a color change, indicating when the reaction is complete.

What happens when the end point of the titration is reached?

The end point is when the reaction between the two solutions is complete, and this is usually signaled by a color change if an indicator is used.

Why should you repeat the titration experiment multiple times?

Repeating the experiment ensures consistency in the results, allowing for more accurate and reliable titration values.

How does the choice of indicator affect the titration?

The type of indicator used can affect how the color change appears; some indicators show a gradual color change, while others show a sudden change.

What is the next step after carrying out the titration?

After performing the titration, you can proceed to calculate the concentration of the unknown solution using the volume of solution added and other relevant data.