the chemical used soften hard water is
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Washing Soda that is Sodium Carbonate Decahydrate( Na2CO3 * 10H2O can be used to remove the permanant hardness of water.
Eli11:
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Softening is the process of removing the dissolved calcium and magnesium salts that cause hardness in water. It is achieved either by adding chemicals that form insoluble precipitates or by ion exchange. Chemicals used for softening include calcium hydroxide (slaked lime) and sodium…
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