To determine the concentration of chloride contaminants in a sample of industrial wastewater, an analytical chemist reacts the wastewater with excess silver nitrate solution. This produces a suspension containing a white precipitate of silver chloride, AgClAgClAgCl, in a solution of soluble nitrates.
Describe the experimental steps the chemist should take to obtain a pure, dry sample of the silver chloride precipitate from this reaction mixture.
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.