Reacting acids with carbonates
2 marks · HardA student adds sodium carbonate to an excess of dilute hydrochloric acid. Bubbles are seen. Name the two non-salt products formed in this reaction.
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carbon dioxide and water
Also accept: carbon dioxide, water; H2O and CO2
Common mistakes: Sodium chloride (that is the salt, not a required answer); Only giving one product
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Marking points
B1 · 1 mark · Names carbon dioxide (or formula CO2)
B2 · 1 mark · Names water (or formula H2O)
Worked solution
When sodium carbonate reacts with dilute hydrochloric acid, the non-salt products are carbon dioxide and water.