Science, asked by ajaybhadoria72, 9 months ago

what is an scum?????????

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Answered by Anonymous

8

Answer:

Scum is an insoluble precipitate of calcium and magnesium salts of fatty acids formed by the reaction of soap with hard water. Hard water often contains salts of calcium and magnesium. ... This precipitate begins floating as an off-white layer over water. This layer is called scum.

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