ORGANIC CHEMISTRY (QUIZ 2)

In the context of elimination reactions, what does the term β hydrogen refer to?

• Hydrogen on the α carbon

• Hydrogen on the β carbon

• Hydrogen on the leaving group

• Hydrogen on the adjacent carbon

According to Saytzeff's rule, which alkene is favored in elimination reactions?

• The simplest alkene

• The most substituted alkene

• The cyclic alkene

• The least substituted alkene

What distinguishes the E2 mechanism from the E1 mechanism?

• E2 requires a weak base, E1 requires a strong base

• E2 occurs in one step, E1 occurs in two steps

• E2 is unimolecular, E1 is bimolecular

• E2 forms a carbocation, E1 does not

Which conformer of chlorocyclohexane is preferred for elimination reactions?

• Conformer A

• Neither conformer

• Conformer B

• Both conformers equally

What is the rate law for an E1 reaction?

• Rate = k[alkyl halide]^2

• Rate = k[alkyl halide][base]

• Rate = k[base]

• Rate = k[alkyl halide]

Which type of alkyl halide reacts faster in E2 reactions?

• Quaternary alkyl halides

• Tertiary alkyl halides

• Secondary alkyl halides

• Primary alkyl halides

Which of the following bases favors E1 reactions?

• Strong bases like OH¯

• Weak bases like H2O

• Strong acids like HCl

• Neutral compounds

What is the mechanism of elimination that involves bond cleavage and bond formation occurring simultaneously?

• SN2

• SN1

• E2

• E1

What is the effect of increasing the number of R groups on the carbon with the leaving group in E2 reactions?

• Decreases reaction rate

• Changes the mechanism to E1

• Increases reaction rate

• No effect on reaction rate

Which elimination mechanism is favored by strong bases?

• SN2

• E2

• SN1

• E1