A student has two separate test tubes containing hydrochloric acid.
The student adds a spatula measure of zinc carbonate, ZnCO3\text{ZnCO}_3ZnCO3, to the first test tube and a piece of zinc metal, Zn\text{Zn}Zn, to the second test tube.
Explain what the student would see in each test tube and the tests that they should carry out to identify the gases produced.
Your answer should include word equations for the reactions that would take place.
276 exam-style questions on Edexcel GCSE Chemistry 4.1 Acids, covering 4.1.1 Acids, alkalis and the pH scale, 4.1.2 Hydrogen ion concentration and pH, 4.1.3 Dilute and concentrated, weak and strong acids, 4.1.4 Bases, alkalis and the reactions of acids, 4.1.5 Chemical tests for hydrogen and carbon dioxide, 4.1.6 Neutralisation as a reaction of acids with bases, 4.1.7 Preparing soluble salts, and 4.1.8 Solubility rules and preparing insoluble salts. Each one has a worked solution and a mark scheme showing where the marks go.