Chemistry in Everyday Life

Short Answer Type

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If water contains dissolved calcium bicarbonate, out of soaps and synthetic detergents which one will you use for cleaning clothes?

Calcium hydrogen carbonate present in water will furnish Ca2+ ions which cause hardness in water.
calcium ion form insoluble calcium soaps respectively when sodium potassium soaps are dissolved in hard water.

2C17H35COONa --> 2NaCl + (C17H35COO)2Ca
   Soap                                insoluble calcium stearate

Therefore, soaps cannot be used to clean clothes with such water.

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