Chemistry, asked by borsecaitanya3, 3 months ago

permanent hardness doen't removed by_____

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Answered by shaily98

Answer:

Permanent hardness can be removed by the addition of washing soda (Na2CO3. 10H2O), addition of sodium polymetaphosphate [calgon (NaPO3)n ] or by ion exchange method).

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permanent hardness doen't removed by_____​

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permanent hardness doen't removed by_____