Exercise 2_Nucleophile&Electrophile

In the carbonyl group, which is the electrophilic site?

Which atom is nucleophilic?

• Carbon

• oxygen

• hydrogen bonded to the oxygen atom

• hydrogen bonded to carbon atom

Which of the following statements is FALSE?

• All nucleophiles have high electron density.

• All nucleophiles are Lewis bases.

• All nucleophiles seek regions of low electron density.

• All nucleophiles are negatively charged.

Complete the following statement.

A/an _____________ is a species that donates a pair of electrons to form covalent bond.

• nucleophile

• electrophile

Which of the following is likely to behave as an electrophile?

NO₂⁺

CN^-

CH₃NH₂

• NO₂⁺ and CN^-

• CN^- and CH₃NH₂

• NO₂⁺ and CH₃NH₂

• NO₂⁺ only

Which of the following is likely to behave as an electrophile?

• (CH₃)₃S⁺

• CH₃S^-

• C₂H₄

• Cl₂

Identify the nucleophile in the reaction shown above.

• A

• B

• C

• D

Identify the nucleophile in the reaction shown above.

• A

• B

• C

• D

Identify the electrophile in the reaction shown above.

• A

• B

• C

• D

• E

Which is the Lewis acid in the reaction?

• A

• B

• C