A student has hydrochloric acid of pH 1.0. She dilutes 5.0 cm3\mathrm{cm^{3}}cm3 of it with water to a total volume of 50.0 cm3\mathrm{cm^{3}}cm3. She then dilutes 1.0 cm3\mathrm{cm^{3}}cm3 of this new solution with water to a total volume of 1.0 dm3\mathrm{dm^{3}}dm3. What is the pH of the final solution?
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44 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.