Question

For each of the solvents below, indicate whether it will be the top or bottom layer when carrying out extraction of an aqueous layer of density 1.05 g/ml.

a) chloroform (bottom layer)

b) hexane =?????

c) toluene =?????

Answer 1

See the three links below. Select each and scroll down the page to the table on the right side of the screen. Find the density. If it is greater than 1.05 it will be on the bottom. If it is smaller than 1.05 it will float.

http://en.wikipedia.org/wiki/Chloroform
http://en.wikipedia.org/wiki/Hexane
http://en.wikipedia.org/wiki/Toluene