IB Chemistry 3.1.14 (HL) Acid-base indicators Questions
IB Chemistry 3.1.14 (HL) Acid-base indicators Questions
Practise explaining how acid-base indicators change colour, linking equilibrium, pKa and structural changes to titration end-point methods.
How this is tested
- explain indicator action with an equilibrium between differently coloured acid and base forms
- interpret colour or species present from indicator pKa and the solution pH
- evaluate indicator use against a pH probe for locating titration end points