Study Tips
How to Understand and Perform Titrations
By Dr Ayesha Khan · · 4 min read
Quick answer
A titration finds the concentration of a solution by reacting it carefully with another of known concentration until the reaction is just complete, shown by an indicator. Accuracy comes from careful technique. The calculation uses moles: from the known solution, find moles, use the equation ratio, then find the unknown concentration.
What titration is for
A titration is a technique for finding the concentration of a solution. You react it, in a controlled way, with a solution of known concentration until the reaction is exactly complete.
The point of exact completion, shown by an indicator changing colour, tells you how much of each solution reacted, from which you can calculate the unknown concentration.
The technique matters
Titration results depend on careful technique — accurate measurement, adding the solution slowly near the end point, and reading the equipment precisely. Sloppy technique gives unreliable results.
Exam questions often test understanding of the method and its precision, so knowing why each step matters is as important as knowing the steps.
The end point
An indicator shows when the reaction is just complete — the end point — usually by a sharp colour change. Adding the solution drop by drop near this point lets you find it accurately.
Understanding that the end point marks exact completion of the reaction is central to both the technique and the calculation.
The calculation uses moles
The calculation is a moles problem. From the solution of known concentration and volume, find its moles. Use the balanced equation's ratio to find moles of the unknown. Then use its volume to find its concentration.
This is why the mole concept matters here. A titration calculation is a standard moles problem dressed in practical clothing.
Reliability and repeats
Titrations are repeated until consistent results are obtained, and close readings are averaged. This improves reliability, and questions often ask about why repeats and concordant results matter.
Understanding that repetition and consistency improve reliability connects the practical to the wider theme of good experimental method.
Common errors
Typical errors include misreading the equipment, overshooting the end point, and calculation slips with units or the equation ratio. Being aware of these helps you avoid them and answer error questions.
Knowing where titrations go wrong, and how to reduce those errors, is both practically useful and commonly examined.
Frequently asked questions
What is a titration for?+
Finding the concentration of a solution by reacting it, in a controlled way, with a solution of known concentration until the reaction is exactly complete, shown by an indicator changing colour.
Why does technique matter so much?+
Because titration results depend on accurate measurement, adding solution slowly near the end point, and precise reading. Sloppy technique gives unreliable results, and the method is often explicitly examined.
What is the end point?+
The moment the reaction is just complete, shown by a sharp colour change in the indicator. Adding solution drop by drop near this point lets you find it accurately, which the calculation depends on.
How do I do the titration calculation?+
It is a moles problem: find the moles of the known solution from its concentration and volume, use the equation's ratio to find moles of the unknown, then use its volume to find its concentration.
Why are titrations repeated?+
To improve reliability — repeats are done until consistent, concordant results are obtained, and close readings are averaged. Questions often ask why repeats and consistent results matter, linking to good experimental method.
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