SI Week 10

Which of the following statements about the SN2 mechanism for nucleophilic substitution reactions is true?

• Involves two steps and occurs with inversion of configuration.

• Involves one step and occurs with racemization.

• Involves one step and occurs with inversion of configuration.

• Involves one step and occurs with retention of configuration.

Which of the following alkyl halides undergoes the fastest SN2 reaction with sodium hydroxide?

• 1-Bromobutane

• 1-Fluorobutane

• 1-Chlorobutane

• 1-Iodobutane

Which of the following statements about an SN1 reaction mechanism is true?

• The reaction involves one step and occurs fastest with tertiary alkyl halides.

• The reaction involves two steps and occurs fastest with tertiary alkyl halides.

• The reaction involves two steps and occurs fastest with primary alkyl halides.

• The reaction involves one step and occurs fastest with primary alkyl halides.

Rank the following carbocations in order of decreasing stability, putting the most stable first.

• II > I > III

• III > II > I

• III > I > II

• I > II > III

Which nucleophile is preferred by SN1 reactions?

• CH3OH

• HS-

• HO-

• CN-

Which of the following solvents favors SN1 reactions?

• DMF

• DMSO

• acetone

• H2O

Which of the following alkyl halides would react the fastest with –OH in SN2 reaction?

• CH3CH2Br

• CH3CH2Cl

• CH3CH2I

• CH3CH2F

What is the product of the nucleophilic substitution reaction shown below? 

• I and II

• Only I

• Only II

• None

what is the best part of halloween?

• costumes

• candy

• haunted houses

• scary movies