Q. 125.0( 2 Votes )

If water contains dissolved calcium hydrogen carbonate then out of soaps and synthetic detergents, which one will you use for cleaning the dirt of clothes?

Answer :

The given sample of water contains calcium ions and hence is hard water. Soaps are not effective in hard water as they produce scum (insoluble precipitate) with calcium ions. Therefore, synthetic detergents must be used to clean the dirt of clothes in hard water.


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