Question

How can we remove hardness in temporary hard water?

Answer 1

Types of water on the basis of salts present in them:

• Hard water- It contains a high amount of calcium and magnesium compounds.
• Soft water- It does not contain compounds of calcium and magnesium.

Type of hardness in water-

• Temporary hard water
• Permanent hard water

Temporary hard water

• It contains a high amount of calcium bicarbonate $\mathrm{Ca}{\left({\mathrm{HCO}}_3\right)}_2$ and magnesium bicarbonate $\mathrm{Mg}{\left({\mathrm{HCO}}_3\right)}_2$ compounds.
• It can be removed by a simple boiling method.