Explain the formation of scum when hard water is treated eith soap
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When soap is used for washing clothes with hard water, a large amount of soap is wasted in reacting with the calcium &, magnesium ion of hard water to form an insoluble precipitate called scum,.
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Explanation:
hard water contains calcium and magnesium and soap is basically sodium or potassium salt of higher fatty acids when soap is added to hard water corresponding calcium and magnesium salts are formed which being in soluble that dissipated this precipitated second is come reaction taking place
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