A student adds dilute sulfuric acid to a test tube containing zinc granules. A colourless gas is evolved, which is tested with a burning splint and produces a 'squeaky pop' sound.
Which gas and which salt are produced in this reaction?
Hydrogen and zinc chloride
Hydrogen and zinc sulfate
Oxygen and zinc sulfate
Carbon dioxide and zinc sulfate
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.