Nucleophilic Substitution Reactions

Which of the following statement is FALSE about nucleophile?

• It is a lone pair donor
• It is a Bronsted Lowry base

• Attracted to electron deficient carbon
• It must be a negatively charged ions

The type of reaction shown is called

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

S_N2 reaction is favoured by

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

Reaction below shows S_N2 reaction. Which statement is FALSE?

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

Tags

NGSS.HS-PS1-2

NGSS.HS-PS1-4

S_N2 reaction is favoured by 1 ° halogenoalkane due to

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

The reaction mechanism shown below is

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

Tags

NGSS.HS-PS1-4

NGSS.HS-PS1-5

S_N1 reaction is favoured by

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

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

The reaction mechanism shown below is

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

Tags

NGSS.HS-PS1-5

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