What this practice covers
These questions are drawn from past CIE 0620 Chemistry papers and filtered to acid-base titrations. You answer, you find out immediately whether you were right, and you get the reasoning for the correct option and for each distractor. Wrong answers go to a mistakes locker so you can come back to exactly those.
Practice is free. You need an account only so your progress and your mistakes are still there next time.
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What examiners see students get wrong here
These are the errors that cost marks on acid-base titrations, taken from our own topic notes. Read them before you practise and you will recognise the traps in the questions.
- Rinsing the burette with distilled water before filling it with acid.
- Worrying about water in the conical flask, which does not affect the result.
- Recording burette readings to one decimal place instead of two.
- Reading the top of the meniscus, or reading it from above.
- Adding a whole squirt of indicator instead of 2 or 3 drops.
- Leaving an air bubble in the burette jet.
- Including the rough titration in the average.
- Choosing universal indicator, which gives no sharp end-point.
Revise it first
If any of the above is unfamiliar, work through the notes before practising: Acid-base titrations revision notes.