Hard and Temporary Hard Water - Chemistry

HARD AND SOFT WATER

The water in some parts of the country is soft, while the water in other parts of the country is hard.

Hard water contains dissolved magnesium ions (Mg2+) and calcium ions (Ca2+), which can get into the water when it comes into contact with limestone and other rocks that contain calcium compounds. This can happen, for example, when rainwater flows over rocks on its way to a reservoir.

TEMPORARY HARDNESS

Temporary hardness is removed by boiling the water. The boiling of temporary hard…