Question

Explain the terms hard water and soft water.Write a note on Calgon method for removal of hardness of water

Answer 1

Hard water has number of deutriom (isotope of hydrogen)more

Answer 2

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. The water is softened and sodium ions are released into water.

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