Presentation on theme: "Topic 9 ReactionsofAcids. Salts A salt is an ionic substance in which the hydrogen ion of an acid has been replaced by a metal ion (or an ammonium ion)."— Presentation transcript:
Salts A salt is an ionic substance in which the hydrogen ion of an acid has been replaced by a metal ion (or an ammonium ion). When an acid is neutralised by an alkali, H + ions from the acid join with OH - from the alkali to form water. H + (aq) + OH - (aq) H 2 O (l)
Naming Salts The first part of the name comes from the base – it will be a metal name. The second part comes from the acid. Salts usually end in “ide” or “ ate”.
Examples 1. Hydrochloric acid will always produce chloride salts: Hydrochloric acid + sodium chloride + sodium hydroxide water
2. Nitric acid will always produce nitrate salts: Nitric acid + calcium nitrate calcium hydroxide +water
3. Sulphuric acid will always produce sulphate salts: Sulphuric acid + potassium sulphate potassium hydroxide + water
Learn! Name of acidChemical Formula Hydrochloric acidHCl Sulphuric acidH 2 SO 4 Nitric acidHNO 3
Came from SaltAcidNeutraliser Sodium chlorideChlorideSodium Magnesium nitrateNitrateMagnesium Ammonium sulphateSulphuricAmmonia
You try these... What will be produced when: 1.Hydrochloric acid is neutralised by potassium hydroxide. 2.Sulphuric acid is neutralised by sodium carbonate. 3.Nitric acid is neutralised by sodium carbonate. 4.Hydrochloric acid is neutralised by zinc metal.