The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolves in a liquid D. The constituents B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid wlich is used in coolking food and forms a solid fat on hydrogenation.
(a) What do you think could (i) constituent A, and (ii) liquid D be?
(b) What could (i) constituent B, and (ii) liquid E be?
(c) What could liquid C be?
(d) How will you separate the mixture containing A, B and C.
(a) (i) Sulphur (ii) Carbon disulphide
(b)(i) Copper sulphate (ii) Water
(c) Vegetable oil
(d) Filter the mixture of A, B and C. C(oil)being liquid will be obtained as a filtrate. Residue consists of A (sulphur) and B (copper sulphate). Add water, shake and filter. A (sulphur) is obtained as residue. Evaporate filtrate to obtain B (copper sulphate).