Question

Which are the two types of hardness of water?

Answer 1

Hello dear here is ur ans :-

There are two types of hardness of water :-

A) Temporary.

B) Permanent.

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Answer 2

There are two types of water hardness, temporary and permanent.

Temporary Hardness is due to the bicarbonate ion, HCO3-, being present in the water. This type of hardness can be removed by boiling the water to expel the CO2, as indicated by the following equation:

Ca(HCO3)2 →← CaCO3 + CO2 + H2O

Permanent hardness is due to calcium and magnesium nitrates, sulphates, and chlorides etc. This type of hardness cannot be eliminated by boiling.

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