how to remove permanent hardness of water by calgon method
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Hard water can be softened by removing calcium and magnesium present in it.
So the addition of Calgon to hard water causes the calcium and magnesium ions of hard water to displace sodium ions from the anion of Calgon. This results in the removal of calcium and magnesium ions from hard water in the form of a complex with Calgon.
Calgon is a complex salt, sodium hexametaphosphate (NaPO3)6.
So the addition of Calgon to hard water causes the calcium and magnesium ions of hard water to displace sodium ions from the anion of Calgon. This results in the removal of calcium and magnesium ions from hard water in the form of a complex with Calgon.
Calgon is a complex salt, sodium hexametaphosphate (NaPO3)6.
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