Distillation Flashcards
(7 cards)
What are the two types of distillation?
Simple and fractional
What is simple distillation used for?
Simple distillation is used to separate a liquid from a solution
What is fractional distillation used for?
Fractional distillation is used to separate a mixture of liquids
How is simple distillation done?
-The solution is heated.
-The part of the solution that has the lowest boiling point evaporates first
-The vapour is then cooled, condenses, and is collected. The rest of the solution is left behind in the flask.
What can you use simple distillation for?
To get pure water from seawater. The water evaporates and the salt is left behind in the flask
What’s the problem with simple distillation?
You can only use it to separate things with very different boiling points if the temperature goes higher than the boiling point of the substance with the higher boiling point they will mix again
If you have a mixture of liquids with similar boiling points, what method do you use to separate them?
Fractional distillation