Question

Explain the formation of Scum when hard water is treated with

soap with equations​

Answer 1

Answer:

Soap does not give foam with hard water due to the formation of scum. The scum is formed by the reaction of soap with calcium and magnesium salts present in hard water. Scum is an insoluble precipitate of calcium and magnesium salts of fatty acids formed by the reaction of soap with hard water.

Answer 2

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