What is the normal boiling point of a liquid defined as?

1 Answer
anor277
Apr 6, 2017

#"The normal boiling point is the temperature........"#

Explanation:

#"The normal boiling point is the temperature........"# at which the vapour pressure of the solution is EQUAL to 1 atmosphere, and bubbles of vapour form directly in the liquid. The vapour pressure of a given liquid is a function of temperature.

If we reduce the ambient pressure, (and chemists do this all the time in vacuum distillations), how do you think the boiling point of a given substance would evolve? Would it increase, decrease, stay the same?

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