Question

The hardness of water is due to the presence of:

Answer 1

The reason for the hardness of water:-

• The hardness of water is due to the presence of calcium and magnesium salts.
• When water drains from minerals containing calcium and magnesium there is the formation of hard water.
• Minerals such as limestone, chalk, and dolomite are rich in calcium and magnesium.

Classification of water:-

• Water can be classified as hard water and soft water.
• Soft water is characterized as surface water with low ion concentrations especially calcium and magnesium ions.
• Hard water is a phrase that indicates water has very high mineral content.

Hence, due to the high presence of calcium and magnesium salts in water, hard water is formed