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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 $(M H C O_{3}, w h e r e M = M g, C a)$ in water.

Permanent hardness of water is because of the presence of soluble salts of calcium and magnesium in the form of chlorides, nitrates, and sulphates which will not be precipitated by boiling the water.

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Q. Mention the ions which cause temporary and permanent hardness of water

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Temporary and permanent hardness of water can be removed by:-

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Hardness of Water and Treatment

Standard XII Chemistry

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