Tue February 17, 2009 By: Renu Suresh

why pumice stone is added to water while determining boiling point of water ?

Expert Reply
Thu February 19, 2009

Pumice stone is added to facilitate the formation of bubbles so that "Bumping." can be prevented. It frequently happens, especially when the distillation has to be carried out under greatly reduced pressure, that the liquid is liable to boil with bumping. Thus we are able to measure the boiling point of water more accurately.

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