Preparation of salts

What the syllabus asks of you

• Describe the preparation, separation and 4 Describe the preparation of insoluble salts by purification of soluble salts by reaction of an precipitation acid with: (a) an alkali by titration (b) excess metal (c) excess insoluble base (d) excess insoluble carbonate
• Describe the general solubility rules for salts: (a) sodium, potassium and ammonium salts are soluble (b) nitrates are soluble (c) chlorides are soluble, except lead and silver (d) sulfates are soluble, except barium, calcium and lead (e) carbonates are insoluble, except sodium, potassium and ammonium (f) hydroxides are insoluble, except sodium, potassium, ammonium and calcium (partially)
• Define a hydrated substance as a substance 5 Define the term water of crystallisation as the that is chemically combined with water and water molecules present in hydrated crystals, an anhydrous substance as a substance including CuSO4•5H2O and CoCl 2•6H2O containing no water