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Byju's Answer
Standard XII
Chemistry
Hardness of Water and Treatment
What causes t...
Question

What causes the temporary and permanent hardness of water?

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Solution

Temporary hardness of water is due to the presence of soluble salts of magnesium and calcium in the form of hydrogen carbonates (MHCO3, where M = Mg, Ca) in water.

Permanent hardness of water is because of the presence of soluble salts of calcium and magnesium in the form of chlorides in water.


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