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1

The carbon atoms in an alkyne are?
A)sp4 hybridiz
B)sp3 hybridiz
C)sp2 hybridiz
D)sp hybridiz
2

The geometry of the carbon atoms in an alkyne are?
A)linear.
B)bent.
C)trigonal plane.
D)tetrahedral.
3

The bond lengths for alkynes are _______ compared to alkenes?
A)longer and weaker.
B)longer and stronger.
C)shorter and weaker.
D)shorter and stronger.
4

The acidity of the C-H bond increases going from?
A)alkane - alkene - alkyne.
B)alkane - alkyne - alkene.
C)alkene - alkane - alkyne.
D)alkene - alkyne - alkane.
E)alkyne - alkene - alkane.
F)alkyne - alkane - alkene.
5

The pKa of alkyne hydrogens are?
A)approximately 60.
B)approximately 45.
C)approximately 35.
D)approximately 25.
E)approximately 15.
F)approximately 5.
6

The acetylide ion is important due to its?
A)use in electrophilic substitution reactions.
B)use in electrophilic addition reactions.
C)use in nucleophilic substitution reactions.
D)use in nucleophilic addition reactions.
7

The most common base used to generate an acetylide carbon anion is?
A)sodium hydroxide.
B)potassium hydroxide.
C)sodium amide.
D)sodium methoxide.
E)sodium acetate.
8

The alkynes can be prepared by elimination reactions by?
A)the dehydrohalogenation of an alkylhalide.
B)a double dehydrohalogenation of a vicinal or geminal alkylhalide.
C)the dehydration of an alcohol.
D)an epoxidation of an alkene.
E)an electrophilic elimination reaction.
9

Lindlar's catalyst is used to make?
A)alkanes from alkynes.
B)trans-alkenes from alkynes.
C)cis-alkenes from alkynes.
D)Markovnikov alcohols from alkynes.
E)anti-Markovnikov alcohols from alkynes.
10

The reaction of alkynes with excess hydrogen halides produces?
A)an anti-Markovnikov single addition.
B)an anti-Markovnikov double addition.
C)a Markovnikov single addition.
D)a Markovnikov double addition.
E)a vicinal dihalide.
11

The reaction of alkynes with H2O in the presence of Hg+2 salts produces?
A)an alcohol.
B)an alkenol.
C)an aldehyde.
D)a ketone.
E)a vicinal diol.
12

The reaction of alkynes with O3 produces?
A)alcohols.
B)aldehydes.
C)a mix of aldehydes and ketones.
D)ketones.
E)acids.





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