You are asked to prepare hard water in your laboratory. Select a group from the following groups of salts, any salt of which you may dissolve in distilled water to obtain hard water. (A) NaCl; Na₂SO₄ ; KCl(B) NaCl; CaCl₂; KCl(C) CaCl₂ ; CaSO₄ ; MgSO₄(D) Na₂SO₄ ; CaSO₄ ; MgSO₄
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Option c is the correct answer as hard water contains magnesium and calcium salts
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Answer:
Option C
Explanation:
The answer is option C because hardwater contains magnesium sulphate,calcium sulphate and calcium chloride.
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