A student is preparing crystals of copper(II) nitrate. They add small portions of copper(II) carbonate, which is a green powder, to a beaker containing warm, dilute nitric acid, stirring the mixture after each addition.
Explain how the student knows when they have added enough copper(II) carbonate to neutralise all of the acid.
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.