You are provided with 20 L of ground water and some amount of alum crystals. The
water contains dissolved iron and calcium. How will you separate the dissolved
metals so that water can be used for drinking purpose? Enlist your opinion.
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Explanation:
is an inorganic salt, also called potassium aluminum sulfate with a formula of AlK(SO4)2 ... Potassium alum is formed by large, transparent crystals that are used in ... 1 G DISSOLVES IN ABOUT 20 ML COLD WATER, ABOUT 1 ML BOILING ... of 0.2-1.0 mg/l (a concn readily found in many water supplies)
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