Explain the formation of scum when hard water is treated with soap.
Explain the formation of scum when hard water is treated with soap.
Harshit Singh , 5 Years ago
Grade 12th pass
10 grade science> Explain the formation of scum when hard w...
1 AnswersPawan Prajapati
Hard water contains salts of calcium and magnesium. Calcium and magnesium on reacting with soap form insoluble precipitate called scum. The scum formation lessens the cleansing property of soaps in hard water.
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