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Sodium lauryl sulphate forms insoluvle scum in water

Answer»

Answer:

When a soap is used in hard water, a SOLID SUBSTANCE we call scum FORMS.

This is because charged calcium and magnesium particles (called ions ) present in the water react with soap to FORM an insoluble substance. Scum BUILDS up on clothes, baths and sinks. ...

The new substance, scum, does not dissolve in water.



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