Learn: Titrations

Welcome!Today we'll explore titrations, a key method in chemistry for determining the concentration of unknown solutions. It's a practical and precise technique that you'll often use in experiments.

What is a titration?A titration is a laboratory technique used to find the exact concentration of an unknown solution by reacting it with a solution of known concentration. It is important for tasks like determining the strength of acids or bases.

How does titration work?In a titration, a solution of known concentration (called the titrant) is added to the unknown solution until the reaction is complete. This is usually indicated by a colour change from an indicator, such as phenolphthalein.

Key apparatus used in titrationDuring a titration, you will need a burette (to add the titrant drop by drop), a pipette (to measure the unknown solution), a conical flask (to mix the solutions), and an indicator (to show the end point).

What is the end point in titration?The end point is the moment when the reaction between the unknown solution and the titrant is complete. Indicators like phenolphthalein change colour to signal this.

Calculations in titrationOnce you reach the end point, you can calculate the unknown concentration using the formula: moles = concentration × volume. Rearrange the formula to find the unknown concentration.

Review Time!Great work! You've learned the basics of titration, including its purpose, equipment, and calculations. Let's review what you've covered.

Well done!You've successfully learned about titrations and practiced key concepts. Keep up the great work and try applying this knowledge in your next experiment!