(a) Draw a labelled sketch of the laboratory set-up for dissolving hydrogen chloride acid.

(ii) Give one chemical test to distinguish between hydrochloric acid and ethanoic acid

(b) Outline a suitable laboratory procedure for obtaining a fairly pure sample of sodium chloride crystals from a solution of it that is contaminated with some methyl orange:

(c) Name one substance used in the laboratory for:

(i) drying ammonia gas,

(ii) testing for the presence of water;

(iii) converting copper (I) oxide to copper.