Question

calcium and magnesium sulphate causes – hardness in water?​

Answer 1

Answer:

If this occurs, it is usually caused by the presence of calcium sulfate/calcium chloride and/or magnesium sulfate/magnesium chloride in the water, which do not precipitate out as the temperature increases. ... permanent hardness = permanent calcium hardness + permanent magnesium hardness.

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Answer 2

Explanation:

Temporary hardness of water is caused by dissolved bicarbonate minerals. As the name suggests, the temporary hardness of water is easier to get rid of. On the other hand, the permanent hardness of water is caused by the presence of either calcium sulphate, calcium chloride, magnesium sulphate, and magnesium chloride.