Question:
If water contains dissolved calcium hydrogencarbonate, out of soaps and synthetic detergents which one will you use for cleaning clothes ?
Answer:
Synthetic detergents will be preferred. This is because if water contains calcium hydrogen carbonate, soaps will react with it and form insoluble salts, which cannot be used to clean clothes. However, synthetic detergents can form soluble salts with these calcium ions, as a result of which it can efficiently clean clothes.
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