Chemistry, asked by kutumbaraoctp, 2 months ago

what is the cause for permanent hardness of water ? explain the removal of hardness of water by calgon method​

Answers

Answered by ap902091
1

Answer:

Washing soda process: Hard water is treated with a calculated amount of washing soda when chlorides and sulphates of calcium and magnesium present in hard water get precipitated as insoluble calcium and magnesium carbonates which can be filtered off.

Explanation:

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