A student is given four white solids: magnesium carbonate, magnesium hydroxide, magnesium oxide and magnesium sulfate. The student adds each solid to a separate sample of dilute hydrochloric acid.
Three of the solids react with the dilute hydrochloric acid. Name the solid that does not react.
Only one of the solids produces a gas when it reacts with the dilute hydrochloric acid. Name this solid and name the gas produced.
The three solids that react all produce the same salt. Name this salt.
Magnesium oxide is described as a base but it is not described as an alkali. Explain why.
40 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.