CAIE IGCSE Chemistry 12.2 Acid Base Titrations Questions

Practise interpreting acid-base titration procedures, apparatus choices and indicator evidence used to find neutralisation volumes.

Exam points

select burette, volumetric pipette and conical flask roles in a titration procedure
interpret indicator choice and colour change as evidence for the titration end-point

Covered syllabus points

12.2.1—An acid–base titration to include the 12.2.2—To identify the end-point of a

[Maximum number: 1]

An acid-base titration is described.
- $25.0 \mathrm{~cm}^{3}$ of dilute aqueous alkali is put into a conical flask.
- Indicator is added to the flask.
- Dilute acid is added to the aqueous alkali until the indicator changes colour.
- The volume of acid used is then recorded.

Which use of apparatus is correct?

The $25.0 \mathrm{~cm}^{3}$ of aqueous alkali is measured using a volumetric pipette.

The $25.0 \mathrm{~cm}^{3}$ of aqueous alkali is measured using the lines on the conical flask.

The volume of acid is measured using a measuring cylinder.

The volume of acid is measured using a volumetric pipette.

[Maximum number: 1]

What is used to identify the end-point of an acid-base titration?

balance

measuring cylinder

indicator

volumetric pipette

[Maximum number: 1]

Dilute hydrochloric acid is titrated into a conical flask containing sodium hydroxide solution and a few drops of methyl orange indicator.

Which piece of apparatus is used to add the hydrochloric acid?

beaker

burette

measuring cylinder

pipette

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Covered syllabus points

Question 1

Question 2

Question 3