quiz 2: extraction of caffeine from tea

Question 1

what will the water be extracted by

Answer 1

dichloromethane (methylene chloride)

Question 2

does caffeine have a high boiling point

Answer 2

yes and will not vaporized on the hot plate

Question 3

what’s the funnel that is used to hold the tea called

Answer 3

separatory funnel

Question 4

the process of the extraction

Answer 4

bottom layer: dichloromethane (denser than water)
top layer: water

caffine will be in the bottom layer bc it is more soluble in dichloromethane than water

30ml of dichloromethane is extracted twice
dry the 60 ml with 2g of anhydrous sodium sulfate

why anhydrous sodium sulfate? salt crystalizes by absorbing water in the solution, leaving the solution free of water, isolatinf caffeine