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what cause the temporary and permanent hardness water chemistry

Temporary hardness- It is due to the presence of magnesium and calcium hydrogen carbonate. This can be removed even by boiling.

Permanent Hardness- It is due to the presence of soluble salts of magnesium and calcium in the form of chlorides and sulphate in water.

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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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temporary hardness: due to the prescence of Mg and Ca bicarbonates in the water. it can be removed by boiling.

permaent hardness: due to the presence of Mg and Ca chlorides and sulphates. it can be compleatly removed by resin method so that we can obtain demineralised water.

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