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Identify the most stable radical.


A) Identify the most stable radical. A) B) C) D) E)
B) Identify the most stable radical. A) B) C) D) E)
C) Identify the most stable radical. A) B) C) D) E)
D) Identify the most stable radical. A) B) C) D) E)
E) Identify the most stable radical. A) B) C) D) E)

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What is the major product of the following reaction? What is the major product of the following reaction? A) I B) II C) III D) IV E) V


A) I
B) II
C) III
D) IV
E) V

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What is the major product of the following reaction? What is the major product of the following reaction? A) I B) II C) III D) IV E) V


A) I
B) II
C) III
D) IV
E) V

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Which of the following is a step in the mechanism of the reaction shown? Which of the following is a step in the mechanism of the reaction shown? A) B) C) D) E)


A) Which of the following is a step in the mechanism of the reaction shown? A) B) C) D) E)
B) Which of the following is a step in the mechanism of the reaction shown? A) B) C) D) E)
C) Which of the following is a step in the mechanism of the reaction shown? A) B) C) D) E)
D) Which of the following is a step in the mechanism of the reaction shown? A) B) C) D) E)
E) Which of the following is a step in the mechanism of the reaction shown? A) B) C) D) E)

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Predict the major monobromination product in the following reaction. (CH3)3CCH2CH3 + Br2 Predict the major monobromination product in the following reaction. (CH<sub>3</sub>)<sub>3</sub>CCH<sub>2</sub>CH<sub>3</sub> + Br<sub>2 </sub> <sub> </sub>

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Which of the following is a benzyl radical? Which of the following is a benzyl radical? A) I B) II C) III D) I and III E) I,II and III


A) I
B) II
C) III
D) I and III
E) I,II and III

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Rank the following fractions which result from the fractional distillation of petroleum in order of increasing boiling point: asphalt,gasoline,kerosene,natural gas,heating oil.

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natural gas < gasoli...

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Give the best product(s) for the reaction.You may choose more than one answer. Give the best product(s) for the reaction.You may choose more than one answer. A) B) C) D) E) CH<sub>3</sub>CH<sub>2</sub>-CH CH-CH<sub>2</sub>CH<sub>2</sub>Br


A) Give the best product(s) for the reaction.You may choose more than one answer. A) B) C) D) E) CH<sub>3</sub>CH<sub>2</sub>-CH CH-CH<sub>2</sub>CH<sub>2</sub>Br
B) Give the best product(s) for the reaction.You may choose more than one answer. A) B) C) D) E) CH<sub>3</sub>CH<sub>2</sub>-CH CH-CH<sub>2</sub>CH<sub>2</sub>Br
C) Give the best product(s) for the reaction.You may choose more than one answer. A) B) C) D) E) CH<sub>3</sub>CH<sub>2</sub>-CH CH-CH<sub>2</sub>CH<sub>2</sub>Br
D) Give the best product(s) for the reaction.You may choose more than one answer. A) B) C) D) E) CH<sub>3</sub>CH<sub>2</sub>-CH CH-CH<sub>2</sub>CH<sub>2</sub>Br
E) CH3CH2-CH Give the best product(s) for the reaction.You may choose more than one answer. A) B) C) D) E) CH<sub>3</sub>CH<sub>2</sub>-CH CH-CH<sub>2</sub>CH<sub>2</sub>Br CH-CH2CH2Br

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What sequence of reagents can be used to accomplish the conversion shown below? What sequence of reagents can be used to accomplish the conversion shown below?

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1.Br2,hν 2....

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Given the bond dissociation energies below (in kcal/mol),calculate the overall ΔH° for the following reaction: (CH3)3CH + Br2 → (CH3)3CBr + HBr (CH3)3C-H 91 (CH3)3C-Br 65 Br-Br 46 H-Br 88 CH3-Br 70

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Calculate the percentage of 1-chloro-2-methylbutane in the following reaction. Calculate the percentage of 1-chloro-2-methylbutane in the following reaction. A) 11.56% B) 27.77% C) 23.14% D) 35.18% E) 13.88%


A) 11.56%
B) 27.77%
C) 23.14%
D) 35.18%
E) 13.88%

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Provide a series of synthetic steps by which (CH3)2C=CH2 could be prepared from 2-methylpropane.

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1.Br2,hυ 2....

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Which of the following statement(s) for dichlorocyclohexane is/are correct? I.cis 1,2- is more stable than trans 1,2. II) cis 1,3- is more stable than trans 1,3. III) cis 1,4- is more stable than trans 1,4.


A) I
B) II
C) III
D) I and II
E) I and III

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Fill in the missing reagents in the reaction below. Fill in the missing reagents in the reaction below.

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List the following radicals in order of increasing stability (ie,from least stable to most stable). (CH3)3C ∙,CH2 List the following radicals in order of increasing stability (ie,from least stable to most stable). (CH<sub>3</sub>)<sub>3</sub>C ∙,CH<sub>2</sub> <sub> </sub> CHCH<sub>2</sub> ∙,CH<sub>3</sub>CH<sub>2</sub> ∙,CH<sub>3</sub> ∙,(CH<sub>3</sub>)<sub>2</sub>CH ∙ CHCH2 ∙,CH3CH2 ∙,CH3 ∙,(CH3)2CH ∙

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CH3 ∙ < CH3C...

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Explain the regioselectivity observed in the radical addition of HBr to 2-methylpropene.

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The reaction proceeds via the addition o...

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Calculate the percentage of 2-chloro-3-methylbutane in the following reaction. Calculate the percentage of 2-chloro-3-methylbutane in the following reaction. A) 11.56% B) 27.77% C) 23.14% D) 35.18% E) 13.88%


A) 11.56%
B) 27.77%
C) 23.14%
D) 35.18%
E) 13.88%

Correct Answer

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Name the two brominated products which result when 2,3-dimethyl-2-butene reacts with NBS.

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1-bromo-2,3-dimethyl...

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Give the steps needed for the following reaction. Give the steps needed for the following reaction.

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Which of the following is the best synthesis of 1,1-dibromopropane? Which of the following is the best synthesis of 1,1-dibromopropane? A) B) C) D) E)


A) Which of the following is the best synthesis of 1,1-dibromopropane? A) B) C) D) E)
B) Which of the following is the best synthesis of 1,1-dibromopropane? A) B) C) D) E)
C) Which of the following is the best synthesis of 1,1-dibromopropane? A) B) C) D) E)
D) Which of the following is the best synthesis of 1,1-dibromopropane? A) B) C) D) E)
E) Which of the following is the best synthesis of 1,1-dibromopropane? A) B) C) D) E)

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