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Discussion Forum : General Science - Elements and Metals (Q.No. 47)
47.
Permanent hardness of water can be removed by adding
Discussion:
19 comments Page 2 of 2.
Manojit muhuri said:
8 years ago
What is hardness of water please any one can explain?
Abc said:
9 years ago
What is meant by the permanent hardness of water?
Mohd ahmad said:
10 years ago
Temporary hardness can be removed by bleaching powder:
CaOCl2+H2O = Ca(OH)2+Cl2.
CaOCl2+H2O = Ca(OH)2+Cl2.
AAKASH PATHAK said:
1 decade ago
Washing soda is a sodium carbonate its formula is the NA2CO3.
Jai said:
1 decade ago
Permanent hardness is caused by chlorides mg is removed by sodium carbonate eg: washing soda.
Raj said:
1 decade ago
Potassium permanganate is used for permanent removal of water hardness.
Soundaria said:
1 decade ago
Permanent hardness is caused by chlorides mg is removed by sodium carbonate eg: washing soda.
Tenzin said:
1 decade ago
Sodium carbonate (washing soda) form sodium chloride with the chloride of mg and ca which cause permanent hardness and as a result permanent hardness reduces to mg and ca carbonates which are temporary hardness and can be easily removed.
Siddharth pandey said:
1 decade ago
But how it can remove the permanent hardness of water ?
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