题目内容

Which of the following esters undergoes hydrolysis in base most easily?()

A. CH3CH2CO2CH3
B. (CH3)2CHCH2CO2CH3
C6H5O2CCH3
D. p-CH3C6H4O2CCH3
E. p-NO2C6H4O2CCH3

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Which of the following intermediates is present in the acid-catalyzed hydrolysis of t-butylacetate but not in the acid-catalyzed hydrolysis of methyl acetate?()

A. a protonated carbonyl
B. a carbocation
C. a carbanion
D. a carboxylate anion
E. 1-propanol

Which of the following conditions will drive the equilibrium of the acid-catalyzed esterification towards ester formation?()

A. addition of water
B. removal of water as it is formed
C. addition of an inorganic acid as a catalyst
D. addition of alcohol
E. both B and D

Which of the following is least likely to be found in the product mixture which results when 2,2-dimethyl-3-pentanol is heated in phosphoric acid?()

A. E-4,4-dimethyl-2-pentene
B. Z-4,4-dimethyl-2-pentene
C. 2,3-dimethyl-2-pentene
D. 2,3-dimethyl-1-pentene
E. 4,4-dimethyl-1-pentene

Which of the following is the strongest acid?()

A. CH3NH2
B. CH3OH
CH3SH
D. CH3OCH3
E. CH3Cl

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