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9.41. Assertion: Hard water is desirable for laundry.

Reason: Soap containing sodium stearate (C17H35COONa) reacts with hard water to precipitate out Ca/Mg stearate.

0 1 View | Posted 5 months ago
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    Answered by

    Payal Gupta | Contributor-Level 10

    5 months ago

    9.41.  (d) Hard water forms scum/precipitate with soap. Soap containing sodium stearate (C17H35COONa) reacts with hard water to precipitate out Ca/Mg stearate.It is, therefore, unsuitable for laundry. It is harmful for boilers as well, because of deposition of salts in the form of scale. This reduces the efficiency of the boiler.

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