A student investigates the preparation of a soluble salt. They add green copper(II) carbonate powder, one spatula at a time, to a beaker containing 50 cm3 of dilute sulfuric acid. The mixture is stirred after each addition. The copper(II) carbonate is added until it is in excess.
State two observations that would show that all the acid has reacted.
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.