4. Carry out simple test-tube reactions to identify cations and anions in aqueous solution

To carry out tests for the presence of anions and to make accurate observations Requirements 0.5 mol dm-3 sodium carbonate solution 0.5 mol dm-3 hydrochloric acid 0.5 mol dm-3 calcium hydroxide solution (limewater) 0.5 mol dm-3 magnesium sulfate solution 0.5 mol dm-3 barium chloride solution 0.5 mol dm-3 potassium chloride solution potassium chloride solid 0.5 mol dm-3 potassium bromide solution