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1

Mixed ethers are also known as?
A)symmetric ethers.
B)unsymmetric ethers.
C)oxides.
D)dialkyl ethers.
E)Oxane.
2

Which statement about epoxides is false?
A)they have larger dipole moments than ethers.
B)the ring is highly strain
C)they react by the ring opening to generate alcohols.
D)they have a ring of any size which contains an oxygen atom.
E)they have a three member ring containing an oxygen atom.
3

The inability of ethers (and epoxides) to act as hydrogen bond donors results in?
A)higher boiling points than corresponding alcohols.
B)lower boiling points than corresponding alcohols.
C)increased solubility in water compared to the corresponding alkane.
D)decreased solubility in water compared to the corresponding alkane.
E)A and C.
F)A and D.
G)B and C.
H)B and D.
4

Ethers can act as?
A)Bronsted acids.
B)Bronsted bases.
C)Lewis acids.
D)Lewis bases.
E)an amphoteric species.
5

A common way to prepare symmetric ethers is from?
A)alkyl halides.
B)alcohols.
C)esters.
D)acids.
E)amides.
6

The Williamson ether synthesis uses an alkyl halide and an alkoxide to generate an unsymmetric ether. It works best when the alkyl halide is?
A)a 1o alkyl halide.
B)a 2o alkyl halide.
C)a 3o alkyl halide.
D)a 4o alkyl halide.
7

Epoxides can be prepared by?
A)treating alkenes with acids.
B)treating alkenes with peroxy acids.
C)treating a geminal halohydrin with a base.
D)treating a vicinal halohydrin with a base.
E)A and C.
F)A and D.
G)B and C.
H)B and D.
8

When epoxides react?
A)nucleophiles act at the less sterically hindered carbon.
B)nucleophiles act at the more sterically hindered carbon.
C)anionic nucleophiles act at the less sterically hindered carbon.
D)anionic nucleophiles act at the more sterically hindered carbon.
E)A and C.
F)A and D.
G)B and C.
H)B and D.
9

Which statement about sulfides is false?
A)they can be prepared by a nucleophilic attack of an alkylthiolate on an alkyl halide.
B)sulfides can be oxidized to sulfoxides.
C)sulfides can be oxidized to sulfones.
D)sulfides can be oxidized to peroxides.
E)sulfides can be alkylated to sulfonium salts.





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