A technician dilutes some nitric acid with distilled water. After dilution, the pH of the solution is 5 and its hydrogen ion concentration is 100 times lower than before.
What was the pH of the nitric acid before it was diluted?
pH 3
pH 6
pH 4
pH 7
88 exam-style questions on AQA GCSE Chemistry 4.2 Reactions of acids, covering 4.2.1a Reactions of acids with metals, 4.2.1b Redox in acid-metal reactions, 4.2.2 Neutralisation of acids and salt production, 4.2.3 Soluble salts, 4.2.4 The pH scale and neutralisation, 4.2.5a Titrations, 4.2.5b Calculating quantities in titrations, and 4.2.6 Strong and weak acids. Each one has a worked solution and a mark scheme showing where the marks go.