Q. 84.5( 26 Votes )

Why is it essential to wash the precipitate with water before estimating it quantitatively?

Answer :

The precipitate which is obtained from a chemical reaction always contain some unwanted substances (eg ions, impurities) which get adsorbed onto the surface of the precipitate. Therefore, it becomes important to wash the precipitate before estimating it quantitatively so as to remove these unwanted adsorbed substances and obtain accurate results.

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