[Sch6543]

Somebody who could explain how we can be sure to remove the substance one wishes by distillation and how to distill substances with higher boiling point than 155

thanks in advance

[Arkcon]

I'd like to welcome you, Sch6543:, to the Chemical Forums, but I'm going to ask you to read the Forum Rules{click}

This is a learning forum, we like to help people help themselves.  You've asked a simple definition likely found in the most basic text.  We can't "help" with a task like that, we can only do it for you and give it to you.  And we don't want to do that.

I also wonder about the second part -- why can;t a substance with a boiling point higher than 155 be distilled?

[orgopete]

Hint, how are temperature and vapor pressure related?