How do you calculate boiling point change?

1 Answer
Jun 4, 2018


You specify a scenario to give us some context for our answer.


We normally quote the #"normal boiling point"#, the which specifies an ambient pressure of #1*atm#. And the #"boiling point"# is that CONDITION of temperature where the VAPOUR PRESSURE of the liquid is equal to the ambient pressure, and bubbles of vapour form directly in the liquid.

And this definition underlies #"vacuum distillation"# where the PRESSURE is reduced so that an otherwise involatile liquid (i.e. involatile at #1*atm#), has a reduced boiling point at the lower pressure.

Anyway, I am still flying blind. You will have to give us some context for the question.