Question

Distinguish between temporary hardness and permanent hardness?

Answer 1

Temporary hardness:	Permanent hardness:
1. Water dissolves minerals such as bicarbonates. It causes the hardness of the water. These salts can be removed easily. Hence, the hardness imparted by these salts is called Temporary hardness.	1.Water dissolves minerals such as chlorides, sulphates They also causes hardness of water. These salts can not removed easily. Hence, the hardness imparted by these salts is called permanent hardness.
2. It can be removed by boiling water	2. It can not be removed by boiling water
3. It can also be called carbonate hardness	3. It can also be called non-carbonate hardness
4. It can also be removed by Clark's method.	4. It can be removed by the Addition of washing soda, permutit process, and ion exchange method.