Question

which substance is used to remove perment hardness of water​

Answer 1

Answer:

To remove the permanent hardness of water following methods are used. Calcium ions present in hard water react with washing soda..

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Explanation:

Answer 2

Answer:

here is your answer

Explanation:

to remove the permanent hardness of water following methods are used calcium ion present in hard water react with washing soda and precipitate out as insoluble calcium carbonate

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