General Knowledge - General Science - Discussion
Discussion Forum : General Science - Elements and Metals (Q.No. 32)
32.
Permanent hardness of water may be removed by the addition of
Discussion:
12 comments Page 2 of 2.
Pooja said:
6 years ago
Sodium carbonate is used to remove both permanent and temporary hardness of the water.
Permanent hardness is due to the presence of sulfate, chloride, nitrate of magnesium and calcium.
Temporary hardness is due to the bicarbonate of calcium and magnesium.
Permanent hardness is due to the presence of sulfate, chloride, nitrate of magnesium and calcium.
Temporary hardness is due to the bicarbonate of calcium and magnesium.
Harry said:
5 years ago
Sodium carbonate, Na2CO3, is also known as washing soda. It can remove temporary and permanent hardness from water. Sodium carbonate is soluble but calcium carbonate and magnesium carbonate are insoluble.
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