A student adds iron filings to a dilute acid. Bubbles of gas form, and the solution left at the end contains the salt iron chloride.
Which acid did the student use?
Dilute sulfuric acid
Dilute ethanoic acid
Dilute hydrochloric acid
Dilute nitric acid
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.