A student makes three statements about ionic equations.
Statement 1: sodium carbonate solution reacting with dilute nitric acid has the same ionic equation as potassium carbonate solution reacting with dilute hydrochloric acid
Statement 2: the ionic equation for marble chips (calcium carbonate) reacting with dilute hydrochloric acid is CO32−(aq)+2H+(aq)→CO2(g)+H2O(l)\mathrm{CO_{3}^{2-}(aq)} + 2\mathrm{H^{+}(aq)} \rightarrow \mathrm{CO_{2}(g)} + \mathrm{H_{2}O(l)}CO32−(aq)+2H+(aq)→CO2(g)+H2O(l)
Statement 3: when barium chloride solution is added to dilute sulfuric acid, H+\mathrm{H^{+}}H+ ions and Cl−\mathrm{Cl^{-}}Cl− ions are spectator ions
Which statements are correct?
1 only
1 and 3 only
2 and 3 only
1, 2 and 3
230 exam-style questions on Edexcel GCSE Chemistry 1.1 Formulae, equations and hazards, covering 1.1.1 Formulae, word and balanced equations, 1.1.2 Balanced ionic equations, and 1.1.3 Hazard symbols and risk in practical work. Each one has a worked solution and a mark scheme showing where the marks go.