Describe tests to identify the gases: (a) ammonia, ( NH_3 ), using damp red litmus paper (b) carbon dioxide, ( CO_2 ), using limewater (c) chlorine, ( Cl_2 ), using damp litmus paper (d) hydrogen, ( H_2 ), using a lighted splint (e) oxygen, ( O_2 ), using a glowing splint (f) sulfur dioxide, ( SO_2 ), using acidified aqueous potassium manganate(VII)

Describe how to compare hydrogen ion concentration, neutrality, relative acidity and relative alkalinity in terms of colour and pH using universal indicator paper

Describe how paper chromatography is used to separate mixtures of soluble coloured substances, using a suitable solvent