detergents cannot be used in hard water true or false please help friends
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it's true dear , hope it helps.
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Soaps are not suitable to be used for washing clothes with hard water. Calcium and magnesium ions present in hard water combine with the soap, forming insoluble sticky grey precipitate called scum. This results in the wastage of soap. Detergents are generally ammonium or sulphonate salts of long chain carboxylic acids. They do not make scum in hard water as these chains do not react with metal ions to form insoluble precipitate.
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