Sodium carbonate reacts with dilute hydrochloric acid to form sodium chloride, water, and carbon dioxide.
Sodium carbonate contains sodium ions, Na+\text{Na}^+Na+, and carbonate ions, CO32−\text{CO}_3^{2-}CO32−.
Write the formula of sodium carbonate.
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.