AQA GCSE Chemistry Higher Tier Paper 1

A student produced a salt by reacting copper carbonate with sulfuric acid.
This is the method used.

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.

Complete the word equation for the reaction.

copper carbonate + sulfuric acid → ______ + ______ + carbon dioxide

Give one observation the student could make during Step 4 which shows that the copper carbonate is in excess.

Give one reason for filtering the mixture in Step 5.

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

The maximum theoretical mass of the salt that could be produced using 50 cm³ of the sulfuric acid is 12.5 g.
The percentage yield of the salt is 92.8%.
Calculate the mass of salt actually produced.
Use the equation:
% yield = (mass of salt actually produced / maximum theoretical mass of salt that could be produced) × 100