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AQA · GCSE · Chemistry · Higher

Equipment for gentle heating

Q01.4 1 mark

A student produced a salt by reacting copper carbonate with sulfuric acid.

  1. Measure 50 cm³ of sulfuric acid into a beaker.
  2. Add copper carbonate powder.
  3. Stir the mixture.
  4. Repeat steps 2 and 3 until copper carbonate is in excess.
  5. Filter the mixture.
  6. Warm the filtrate gently until crystals start to appear.
  7. Leave the solution to cool and crystallise.

Name the equipment that can be used to warm the filtrate gently in Step 6.

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Marking points

  1. 1 Names an electric heater or a water bath.

Full-mark answer

An electric heater.

Why this answer loses marks

Use a Bunsen burner.

Direct flame is not the credited gentle-heating equipment for this step.

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