organic chapter 6

What is the nucleophile in the reaction OH- + CH3Br ⇾ CH3OH + Br-?

• Carbon

• Sulfur

• Nitrogen

• Oxygen

Which nucleophilic substitution mechanism is a one-step process?

• SN2

• E2

• SN1

• E1

In the SN2 mechanism, what happens to the configuration of the reactant?

• It becomes a carbocation

• It inverts

• It undergoes racemization

• It remains the same

Which type of alkyl halide reacts fastest in the SN2 mechanism?

• Secondary

• Primary

• Quaternary

• Tertiary

What is the first step in the SN1 mechanism?

• Formation of a carbocation

• Leaving group departs

• Nucleophile attacks

• Formation of a transition state

Which of the following is true about the SN1 mechanism?

• It involves two reactants in the rate-determining step

• It always results in inversion of configuration

• The nucleophile is involved in the first step

• It is faster for tertiary carbocations

What type of solvent enhances the rate of the SN1 mechanism?

• Non-polar solvents

• Polar protic solvents

• Hydrophobic solvents

• Apolar solvents

In which mechanism does the nucleophile act as a base?

• E1

• E2

• SN2

• SN1

What is the result of dehydrohalogenation?

• Formation of a nucleophile

• Formation of a carbocation

• Formation of a leaving group

• Formation of a pi-bond

Which halide type undergoes both SN1 and SN2 mechanisms?

• Quaternary halides

• Secondary halides

• Tertiary halides

• Primary halides