General Knowledge - General Science - Discussion
Discussion Forum : General Science - Elements and Metals (Q.No. 47)
47.
Permanent hardness of water can be removed by adding
Discussion:
19 comments Page 1 of 2.
Sandy said:
1 decade ago
@pooja
Permanent hardness is caused by chlorides of ca , mg and is removed by sodium carbonate i.e. washing soda and also by ion exchange.
Permanent hardness is caused by chlorides of ca , mg and is removed by sodium carbonate i.e. washing soda and also by ion exchange.
(1)
Pooja said:
1 decade ago
I am not getting your point. Please explain.
(1)
SIDHYA said:
7 years ago
Why may permanent hardness of water be removed by the addition of washing soda?
(1)
Akhila said:
7 years ago
Why adding by removing the hardness of water?
(1)
Ganesh said:
6 years ago
Adding alum is correct or not? Please tell me.
Nmatre said:
7 years ago
In one word, the surface tension is extremely high which causes to the hardness of water when we add washing soda it gets weakens and thus cleaning soap or detergent work properly by breaking hardness molecule.
Elue above said:
7 years ago
Ion exchange doesn't remove permanent hardness @Sandy.
Ajay singh said:
8 years ago
@Manojit.
The amount of dissolved calcium and magnesium in the water is hard water.
The amount of dissolved calcium and magnesium in the water is hard water.
AJAY SINGH said:
8 years ago
There are a number of methods to remove the hardness present in water. One those methods are being followed, the hard water gets converted to soft water. Some of the methods to remove hardness from water are,
Chemical Process of Boiling Hard Water.
Adding Slaked Lime (Clark's Process).
Adding Washing Soda.
Calgon Process.
Ion Exchange Process.
Using Ion Exchange Resins.
Chemical Process of Boiling Hard Water.
Adding Slaked Lime (Clark's Process).
Adding Washing Soda.
Calgon Process.
Ion Exchange Process.
Using Ion Exchange Resins.
Nandu said:
8 years ago
@Manojit Muhuri.
The water hardness contains calcium (ca) + magnesium (mg) more than 10 ppm is called slight hard water it can b remove by ion exchange process.
The water hardness contains calcium (ca) + magnesium (mg) more than 10 ppm is called slight hard water it can b remove by ion exchange process.
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