Different samples of water containing each 100ppm of Cacl2,MgSO4,CaSO4,Mgcl2 among them which will have greater hardness?
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HARDENESS
Explanation:
Hardness is defined as the amount of
Ca or Mg salts present in water. It can be
In two forms temporary that is caused by
Ca and Mg bicarbonates and permanent hardness
Which is caused by Ca and Mg chlorides and
Sulphates
No amount or strength of hardness is determined by the
No of multivalent cations present in the water after
Getting in react with water . So in this sense Ca
And Mg both will form same no of ions but Mg salts will cause
More hardness due to formation of Mg(OH)2 which wont
Precipitate wheras Ca gets precipitated.
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