How is the problem of scum formation resolved
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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 insoluble substance. Scum builds up on clothes, baths and sinks. Detergents do not form scum.
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when soap is used in hard water,a solid substances we call scum is formed. this is because of charged calcium and magnesium particles(called ions)present in water react with soap to form an insoluble substance . scum builds upon clothes baths and sinks. detergents do not form scum.
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