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Topic: How do water softners work with hard water to make it soft water?  (Read 3371 times)

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Offline nameless74

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How do water softners work with hard water to make it soft water?
« on: July 18, 2009, 06:01:07 PM »
How do water softners work with hard water to make it soft water?
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Offline o0CY0o

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Re: How do water softners work with hard water to make it soft water?
« Reply #1 on: July 18, 2009, 10:02:26 PM »
Quote from: nameless74 on July 18, 2009, 06:01:07 PM
How do water softners work with hard water to make it soft water?

Hard water is "hard" due to the present of Ca2+ or Mg2+ ion.
To make it soft, we just add another counter anion to the hard water, which will form a ppt. with Ca2+ or Mg2+
as a result, the con. of Ca2+ and Mg2+ is lowered and thus, soften.
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