Which of the following methods is used to rem | vedclass

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(A) The hardness of water is caused by the presence of calcium $(Ca^{2+})$ and magnesium $(Mg^{2+})$ ions. Calgon (sodium hexametaphosphate,$Na_6P_6O_

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Calgon

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(A) The hardness of water is caused by the presence of calcium $(Ca^{2+})$ and magnesium $(Mg^{2+})$ ions. Calgon (sodium hexametaphosphate,$Na_6P_6O_{18}$) is a well-known method used for water softening. It works by sequestering these ions into soluble complexes,thereby removing the hardness of water.

Which of the following methods is used to remove hardness from water?

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