What is the the difference between evaporation and distillation? I always get the two mixed up :/
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Evaporation and Distillation ? watch
- Thread Starter
- 25-10-2017 10:16
- 26-10-2017 01:29
Evaporation - remove the liquid
Distillation - remove the liquid, then (condense it to) collect it
- 26-10-2017 11:19
Evaporation is the process of a liquid becoming a gas. It is transfer from liquid phase to gas phase.
Distillation is a process that includes evaporation stage(s).
Distillation is a technique uses to separate (bulk) fluid mixtures by taking advantage of the difference in boiling points of the compounds in that mixture.
- 26-10-2017 15:22
Evaporation is a phase transition from liquid to gas which occurs at the surface of the liquid phase.
Distinct from boiling as boiling involves saturated molecules turning to gas from within the liquid phase itself.
Distillation is a process in chemistry whereby a compound is heated to it's boiling point, the vapour then travels up a column and then hits a liebig condenser - A tube with a water jacket, the compound then condenses back to the liquid phase. This is a useful method for carrying out selective oxidation reactions and reactions that require heat to work.
Rotary evaporation is essentially the same principle but it's specifically used for removing solvent from a reaction vessel (containing products). They also have a water-vacuum system which lowers the air pressure inside the evaporator, which in turn lowers the boiling point of the solvent in question. Allowing you to evaporate solvents off at lower temperatures.