You are provided with an impure sample of ferrous sulphate in the laboratory. Name the process you will apply to get pure crystals of ferrous sulphate. Briefly give the steps you will take.
Answers
Preparation of the solution
Take about 25-30 ml of distilled water in a beaker and add powdered crude copper sulphate while stirring the solution so that the powder dissolves.Keep adding the powdered sample till a little of it remains undissolved, even if it is stirred thoroughly.Now add 2-3 ml of dil. H2SO4 to make the solution clear. This prevents the hydrolysis of copper sulphate.
Filtration of the solution
Take a funnel and fix a filter paper in it and clamp it to a stand.Place a china dish under the funnel. The stem of the funnel should touch the wall of the china dish to avoid the solution splashing out.Pour the solution into the funnel over a glass rod and collect the filtrate in a china dish. The insoluble impurities are left in the filter paper as residue...
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Explanation:
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