Outline how a mixture of ammonium chloride, potassium chloride and lead (II) chloride could be separated in the laboratory. (b) Name one drying agent that is (i) solid, (ii) liquid (c) Mention one laboratory apparatus used for: (i) preparing a standard solution; (ii) converting vapour to liquid; (iii) keeping solid samples dry; (iv) generating gases intermittently; (v) determining the pH of a solution. [5 marks] (d) (i) Describe a chemical test that could be used to distinguish between pure water and sodium tetraoxosulphate(VI)solution (ii) Zn(OH)2 and Ca(OH)2 are white substances What reagent would be suitable to distinguish between the two substances?​