Physics, asked by naveen00121, 1 year ago

how to remove permanent hardness of water by calgon method

Answers

Answered by vinay0123
7
 complex salt, sodium hexametaphosphate (NaPO3)6.

Calgon ionizes to give a complex anion. The addition of Calgonto hard water causes the calcium and magnesium ions of hard water to displace sodium ions from the anion of Calgon.
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