Nucleophilic Substitution Reaction-Halogenoalkanes

Nucleophilic Substitution Reaction-Halogenoalkanes

Multiple Choice

Name this Molecule

• butane
• cyclohexane
• 3-methylpentane
• 4-ethylpentane

Multiple Choice

Solvent affects substitution reaction. S_N1 reaction is favoured by

• protic solvent due to its ability to stablize carbocation
• aprotic solvent due its ability to stablize carbocation
• protic solvent due to hydrogen bonding
• aprotic solvent due to lack of hydrogen bonding

Multiple Choice

Which of the following is FALSE for S_N1 reaction?

• Favored by 3° halogenoalkane
• 1 step mechanism
• Favored by protic solvent
• Rate is faster than S_N2

Multiple Choice

The reaction mechanism shown below is

• S_N1 
• S_N2
• S_N1 and S_N2
• None of the above

Multiple Choice

S_N1 reaction is favoured by 3 ° halogenoalkane due to

• nucleophile attack
• less bulky group and less steric hindrance
• more stable carbocation formation
• bimolecular collision

Multiple Choice

Reaction below shows S_N1 reaction. Which statement is FALSE?

• Unimolecular collision
• OH^- is a nucleophile
• Two step mechanism
• Molecularity is 2

Multiple Choice

S_N1 reaction is favoured by

• 1° halogenoalkane
• 2° halogenoalkane
• 3° halogenoalkane
• 1° and 2° halogenoalkane

Multiple Choice

The reaction mechanism shown below is

• S_N1 
• S_N2
• S_N1 and S_N2
• None of the above

Multiple Choice

S_N2 reaction is favoured by 1 ° halogenoalkane due to

• nucleophile attack
• carbocation formation
• less bulky group and less steric hindrance
• bimolecular collision

Multiple Choice

Reaction below shows S_N2 reaction. Which statement is FALSE?

• Bimolecular collision
• OH^- is a nucleophile
• Two step mechanism
• Molecularity is 2

Multiple Choice

S_N2 reaction is favoured by

• 1° halogenoalkane
• 2° halogenoalkane
• 3° halogenoalkane
• 1° and 2° halogenoalkane

Multiple Choice

The type of reaction shown is called

• Addition reaction
• Nucleophilic reaction
• Electrophilic reaction
• Substitution reaction