THE PART OF THE SOLUTION THAT HAS THE LOWEST BOILING POINT EVAPORATATES
THE VAPOUR IS THEN COOLED, CONDENSES AND IS COLLECTED
THE REST OF THE SOLUTION IS LEFT BEHIND IN THE FLASK
YOU CAN USE SIMPLE DISTILLATION TO SEPARATE WATER FROM SEA WATER
CAN ONLY USE IT IF THE LIQUIDS HAVE A VERY DIFFERENT BOILING POINT
FRACTIONAL DISTILLATION
USED TO SEPARATE A MIXTURE OF LIQUIDS
HOW IT WORKS
PUT MIXTURE IN A FLASK AND STICK A FRACTIONATING COLUMN ON TOP
HEAT
THE LIQUID WITH THE LOWEST BOILING POINT EVAPORATES FIRST
WHEN THE TEMPERATURE ON THE THERMOMETER MATCHES THE BOILING POINT OF THIS LIQUID IT WILL REACH THE TOP OF THE COLUMN
LIQUIDS WITH HIGHER BOILING POINTS MIGHT ALSO START TO EVAPORATE BUT THE COLUMN IS COOLER AT THE TOP SO THEY WILL ONLY GET PART OF THE WAY UP BEFORE CONDENSING AND RUNNING BACK DOWN TOWARDS THE FLASK
WHEN THE FIRST LIQUID HAS BEEN COLLECTED YOU RAISE THE TEMPERATURE UNTIL THE NEXT ONE REACHES THE TOP