1.The correct name of the following molecule would be A)2-ethyl-3.3-dimethylheptane B)6-ethyl-5,5-dimethylheptane cane C) 3,4,4-trimethyloctane Ans:C 2.What is the name given to the Newman p butane conformation show CH A)anti B)gauche C)staggered D)eclipsed E)skewed Ans:B 3.At room temperature,the various conformations of butane B not inte E)There is no way to determine if interconversion occurs Ans:D Page
Page 1 1. The correct name of the following molecule would be: A) 2-ethyl-3,3-dimethylheptane D) 2-butyl-3-methylpentane B) 6-ethyl-5,5-dimethylheptane E) 2-sec-butyl-2-methylhexane C) 3,4,4-trimethyloctane Ans: C 2. What is the name given to the Newman projection of the butane conformation shown here? H H CH3 CH3 H H A) anti B) gauche C) staggered D) eclipsed E) skewed Ans: B 3. At room temperature, the various conformations of butane A) do not interconvert with only the anti form present. B) do not interconvert, but all forms are present. C) interconvert slowly. D) interconvert rapidly. E) There is no way to determine if interconversion occurs. Ans: D
4.What statement is true of the following energy diagram? SM prod 1 For irreversible reaction dominate at for re eversible reactions.equal amounts of l and 2 will be formed D) For irreversible reactions,equal amounts of 1 and 2 will be formed. E) None of the above are true. Ans:E 5.What would be the correct name of the following CH3-CH2-CH2-CH-CH3 CH3-CH2-CH-CH2-CH 3-(se pentane 6.The following Newman projection corresponds to which molecule? H CH2CH3 CH3CH2 A)pentane B)butane C)3-ethylbutane D)hexane E) Page2
Page 2 4. What statement is true of the following energy diagram? prod 1 prod 2 SM A) For irreversible reactions, product 1 will dominate. B) For reversible reactions, product 2 will dominate at equilibrium. C) For reversible reactions, equal amounts of 1 and 2 will be formed. D) For irreversible reactions, equal amounts of 1 and 2 will be formed. E) None of the above are true. Ans: E 5. What would be the correct name of the following? CH2 CH2 CH CH3 CH3 CH2 CH CH2 CH3 CH3 A) 3-(sec-pentyl)pentane D) 3-ethyl-4-methylheptane B) 5-ethyl-4-methylheptane E) 3-ethyl-4-propylpentane C) 3-(sec-butyl)hexane Ans: D 6. The following Newman projection corresponds to which molecule? H CH3CH2 H H CH2CH3 H A) pentane B) butane C) 3-ethylbutane D) hexane E) 3-methylpentane Ans: D
7.Rotation around the carbon- arbon bond of the molecule depicted by the following Newman projection requires how much energy A)0kcal/mol B)3 kcal/mol C)6 keal/mol D)9 kcal/mol E) 8.What is the correct IUPAC name for the following molecule? A) 1,1,1,4-tetramethylhexane D)3.6.6.6-tetramethylhexane 4-ethyl-1,1,1-trimethylpentane E)2,2,5-trimethylheptane -ethyl-2,2-dimethylhexane Ans: 9.The following represents what functional group? R7O-R A)ester B)ether C)alcohol D)thiol E)ketone Ans:B 10.The following represents what functional group? A)alcohol B)aldehyde C)carboxylic acid D)amide E) Page3
Page 3 7. Rotation around the carbon-carbon bond of the molecule depicted by the following Newman projection requires how much energy? H H H H H H A) 0 kcal/mol B) 3 kcal/mol C) 6 kcal/mol D) 9 kcal/mol E) 15 kcal/mol Ans: B 8. What is the correct IUPAC name for the following molecule? A) 1,1,1,4-tetramethylhexane D) 3,6,6,6-tetramethylhexane B) 4-ethyl-1,1,1-trimethylpentane E) 2,2,5-trimethylheptane C) 5-ethyl-2,2-dimethylhexane Ans: E 9. The following represents what functional group? R R O A) ester B) ether C) alcohol D) thiol E) ketone Ans: B 10. The following represents what functional group? R H O A) alcohol B) aldehyde C) carboxylic acid D) amide E) ketone Ans: B
11.The following represents what functional group? R-CEN B)thiol C)ketone D)nitrile E)amine 12.What is the correct structure for tertbutyl bromide? A) B) 丫e 人 Page4
Page 4 11. The following represents what functional group? R C N A) amide B) thiol C) ketone D) nitrile E) amine Ans: D 12. What is the correct structure for tertbutyl bromide? A) Br B) Br C) Br D) Br E) Br Ans: B
13.The following Newman projection represents which molecule? CH3 CH2CH3 CH2CH2CH3 Page5
Page 5 13. The following Newman projection represents which molecule? H H3CH2CH2C CH3 CH2CH3 CH3 CH2CH2CH3 A) B) CH3 CH3 C) D) E) Ans: A