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| 1. |
What causes the temporary and permanent hardness of water? |
| Answer» SOLUTION :Temporary hardness of water is due to the presence of bicarbonates of calcium and MAGNESIUM in water i.e., `Ca(HCO_(3))_(2)`, and `Mg(HCO_(3))` in water. Permanent hardness of water is due to the presence of soluble chlorides and sulphates of calcium and magnesium ie,` CaCl_(2)`, `CaSO_(4)`. `MgCl_(2)` and `MgSO_(4)`. | |