1. When caffeine is treated with HCl what solvent is the resulting compound more

Question

1.When caffeine is treated with HCl what solvent is the resulting compound more soluble in?

a.water

b.none of the above

c.methylene chloride

d.chloroform

2.When a carboxylic acid is treated with a base (such as NaOH) the resulting compound will be more soluble in?

a.water

b.none of the above

c.methylene chloride

d.chloroform

3.When water is mixed with dichloromethane which liquid will be on top?

a.dichloromethane

b.none of the above

c.all of the above

d.water

4.A very polar compound (such as aspirin) would what type of Rf on a TLC plate?

a. high rf

b.low rf

c. no rf

5.If a melting point has a value that is lower than the literature value it is indicative of what?

a.impurities

b.that compound is pure

c.a freezing point depression

d.all of the above

Explanation / Answer

1.water

2. water

3.water

4. high RF

5. impurities

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