Titration (PAG C6) Flashcards

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Note: We may include questions that have multiple correct answers. It's useful to remember specific examples to understand these concepts better.

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What is a titration used for in chemistry?

Titration is a method used to find the unknown concentration of an acid or an alkali by reacting it with a solution of known concentration.

Which three main pieces of glassware are used in a titration and what does each one do?

A burette holds the solution that is added drop by drop, a pipette measures a fixed volume of solution, and a conical flask holds the solution being tested and the indicator.

How do you prepare the conical flask before starting a titration?

Use a pipette to measure a fixed volume of the solution into the conical flask, then add a few drops of indicator and place the flask on a white tile.

What is meant by the end point of a titration?

The end point is when the indicator changes colour and stays changed, showing that the reaction between the acid and alkali is just complete.

What is a titre in a titration experiment?

The titre is the volume of solution run from the burette that is needed to reach the end point, usually measured in cm³.

Why do you repeat a titration until you get concordant results?

You repeat the titration to get concordant results, which are titres that are very close together (for example within 0.1 cm³), to improve accuracy.

Why is a white tile placed under the conical flask during a titration?

A white tile is used so you can see the colour change of the indicator more clearly at the end point.

Why should you rinse the burette and pipette with the solutions they will contain before starting the titration?

You rinse them with the solutions to remove any water and stop the solution being diluted, which could change the concentration.

Why must you wear eye protection during a titration?

You must wear eye protection because acids and alkalis can be corrosive and may damage your eyes if they splash.

In simple terms, how can titration results help you find an unknown concentration?

You use the measured volume and known concentration of one solution to work out its moles, use the balanced equation to find the moles of the other solution, then divide by its volume to find its concentration.

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