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Salts. By Amy Badger. Acid + Metal = Salt + Hydrogen. For example Sulphuric acid + Potassium hydroxide = Potassium sulphate + Hydrogen. Acid+ Base = Salt + Water. For example Nitric acid + Potassium oxide = Potassium nitrate + water. Acid + Alkali = Salt + Water. For example
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Salts By Amy Badger
Acid + Metal = Salt + Hydrogen For example Sulphuric acid + Potassium hydroxide = Potassium sulphate + Hydrogen
Acid+ Base = Salt + Water For example Nitric acid + Potassium oxide = Potassium nitrate + water
Acid + Alkali = Salt + Water For example Hydrochloric acid + Potassium hydroxide = Potassium sulphate + Water
Acid + Carbonate = Salt + Water + Carbon Dioxide For example Sulphuric acid + Potassium carbonate = Potassium sulphate + Water + Carbon Dioxide
Precipitation • Precipitation is when you make insoluble salts by reacting two soluble salts. The salt is formed as a solid. This reaction is useful when we want to remove metal ions from polluted ions. • For example: Lead nitrate + sodium chloride = Lead chloride+ sodium nitrate
Solubility of salts • All sodium, potassium and ammonium salts are soluble in water. • All nitrates are soluble in water. • All sulphates are soluble in water except: lead, barium and calcium sulphate. • All chlorides are soluble In water except silver and lead chloride. • All carbonates are insoluble in water except sodium, potassium and ammonium carbonate.
Questions • An acid plus a base equals what? • How do you make a salt, water and carbon dioxide? • Precipitation is when you make insoluble salts by reacting what? • Are nitrates soluble? • Is Lead sulphate soluble?
Answers • Salt + Water • Acid + Carbonate • Two soluble salts • Yes • No