what is hard water?

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what is the differnce between hard water and soft water?

what are the advantages and disadvantages of using hard water?

Posted Thu 29th March, 2012 @ 11:11 by Sabah x

8 Answers

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Hard water contains calcium and magnesium salts in the form of a carbonate which makes the water hard. It does not make a soap lather well meaning it doesnt make the soap become soapy if you know what i mean. Basically when you wash your hands and you use soap, it forms a lather if it was soft water which has no calcium or magnesium salts present in the water.

And also hard water forms scum(precipitate) with soap, therefore unsuitable for laundry but soft water does not form scum.

Answered Thu 29th March, 2012 @ 20:51 by Braniac
Edited by Braniac on Thu 29th March, 2012 @ 20:52
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k thnx a lot u jus did all ma hmewrk 4 me

Answered Thu 29th March, 2012 @ 21:10 by Sabah x
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limescale blad

Answered Thu 29th March, 2012 @ 21:11 by M
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thnx blad

Answered Thu 29th March, 2012 @ 21:13 by Sabah x
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;)

Answered Thu 29th March, 2012 @ 21:18 by M
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;P

Answered Thu 29th March, 2012 @ 21:58 by Sabah x
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hard water forms scum which means you need much more soap to form a decent lather.

Answered Tue 3rd April, 2012 @ 17:08 by sadsad
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The difference between Hard Water & Soft water is that Hard Water has dissolved compounds in it; for example Magnesium and/or Calcium. It's commonly found in rivers/oceans/seas as there are rocks underwater of which carry these compounds. And as water travels down the stream or ocean etc, it collects these molecules. 

Softwater is basically the opposite of hard water, in which it doesnt contain these compounds. And water is softened by removing its ions (The Mg+ or the Cl- by using an ion exchange column etc)
 
The advantage of HARD Water is that its quite healthy. It's good for your bones/teeth as it contains Calcium.
However the downside is that its expensive (Because we need a lot of soap to be used for it to lather up.) and when hard water reacts with soap it forms an insoluble precipitate called scum (A.k.A dirt ring in the bath.) and in Washing machines or Dishwashers it forms limescale, which reduced the efficiency of the machine. 

Answered Thu 12th April, 2012 @ 15:47 by Nishat Ahmed