Multiple Choice
The solvent diethyl ether can be mixed with water but only by shaking the two liquids together.After the shaking is stopped,the liquids separate into two layers,much like oil and vinegar.The free-base form of the alkaloid caffeine is readily soluble in diethyl ether but not in water.Suggest what might happen to the caffeine of a caffeinated beverage if the beverage was first made alkaline with sodium hydroxide and then shaken with some diethyl ether.
A) The water layer would turn a pink color indicating an alkaline pH.
B) The caffeine would transform into the free base and transfer into the diethyl ether.
C) The caffeine would transform into the free acid and transfer into the diethyl ether.
D) The diethyl ether and water would mix into one layer.
Correct Answer:

Verified
Correct Answer:
Verified
Q72: Which of the following molecules contains a
Q73: The following reaction is used to make
Q74: Which of the following is a saturated
Q75: What is the percent volume of water
Q76: Correctly identify the following functional groups in
Q78: Which of the following molecules could be
Q79: The copolymer styrene-butadiene rubber (SBR),shown below,is used
Q80: Which of the following two stick structures
Q81: Why do ethers have lower boiling points
Q82: Which of the following does not describe