Why does hard water not form lather with soap?
Why does hard water not form lather with soap?
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1 Answer
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This is a short answer type question as classified in NCERT Exemplar
With soap, hard water generates scum/precipitate. Soap containing sodium stearate (C117H35COONa) interacts with hard water to form calcium and magnesium stearate (Ca/Mg stearate). As a result, it is unsuitable for laundering. Because of the deposition of salts in the form of scale, it is also hazardous to boilers.
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