AQA · Chemistry · 8462

GCSE Chemistry: Titrations

Chemical changes · AQA GCSE Chemistry (8462), specification point 4.4.2.5. Cards are generated from the exam board's own specification for "Titrations", and every card links back to the page it came from. Separate science only. Specification © AQA — used with attribution.

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  1. What technique measures the volumes of acid and alkali solutions that react with each other?

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    Titration, using a suitable indicator to show the end point.

  2. In an acid–alkali titration, the end point is detected using a suitable ?.

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    indicator

  3. Which three strong acids are used in GCSE titrations?

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    Sulfuric acid, hydrochloric acid and nitric acid.

  4. Which strengths of acid and alkali are used in GCSE titrations to find reacting volumes?

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    Strong acids and strong alkalis only.

  5. Why is an indicator needed in an acid–alkali titration?

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    Because neutralisation produces no visible change on its own; the indicator's colour change shows the end point where acid and alkali have reacted exactly.

  6. In which two units are concentrations expressed in titration calculations?

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    mol/dm³ and g/dm³.

  7. What can be calculated from titration reacting volumes and the known concentration of one solution?

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    The concentration of the other solution (in mol/dm³ or g/dm³).

  8. How is a concentration in mol/dm³ converted to g/dm³?

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    Multiply by the relative formula mass (Mr) of the solute.

  9. In AQA GCSE Chemistry, what does Required Practical 2 determine by titration?

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    The reacting volumes of solutions of a strong acid and a strong alkali.

  10. Which tier of GCSE Chemistry requires calculating chemical quantities in titrations?

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    Higher Tier only.

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