Pre Lab Experiment 2: Extraction Flashcards
1
Q
What is the goal of this experiment? What compounds are being used?
A
1) Separate a mixture of benzocaine and triphenylmethanol using liquid-liquid extraction.
2
Q
Which compound is in the organic layer initially?
A
Triphenylmethanol
3
Q
Which compound is in the aqueous initially?
A
Benzocaine
4
Q
Why do we add aq.HCl?
A
To create a charged benzocaine so it can dissolve in the aqueous layer
5
Q
Why do we add a base to the aqueous layer?
A
To neutralize benzocaine so it can be dissolved in organic layer
6
Q
How can we tell which layer is the organic layer?
A
Look at the Density. Lower density is always top layer.
7
Q
What organic compounds can be the bottom layer (higher density than water)?
A
Methylene Chloride (1.33) and Chloroform (1.49)
