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Which substance is used for removing hardness from water |
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Answer» Washing soda Bleaching powder Lime Hai ya nhi mujhe pata nhi The hard water is an impure form of water having a high mineral contents, like Ca, Mg, sulphides, chlorides , bicarbonates etc and do not give lather with ordinary soap.But, the washing soda is sodium carbonate Na2CO3 , which when dissolves in the Ca+2 /Mg+2 containing hard water, the calcium or magnesium ion forms a insoluble carbonate with washing soda which comes out and the soluble salt remains in the solution and the solution gives lather. Kya Lime Washing soda Na2CO3.10H2O Soap |
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