What is the correct order of reactivity towards electrophilic substitution?

Therefore, the correct order of reactivity towards electrophilic substitution is Phenol > benzene > chlorobenzene > benzoic acid.

Which is more reactive aniline or Acetanilide?

Acetanilide is less reactive than aniline toward electrophilic substitution. In case of aniline the electron density present on the amino group is donated to the ring by resonance effect.

What is the order of reactivity of the following compounds in electrophilic substitution most reactive less reactive I toluene II nitrobenzene III benzene IV Phenol?

Therefore, the correct order of reactivity towards electrophilic substitution reaction is toluene > benzene > chlorobenzene > nitrobenzene. Hence, the correct option is (C).

Which is more reactive chlorobenzene or aniline?

In aniline -NH2 group is a ring activating group due to dominance of its +M effect over its weak -I effect. Hence aniline is more reactive than chlorobenzene towards electrophilic substitution reaction.

What is correct order of electrophilic addition of following alkene?

IV > III > I > II.

Why is acetanilide is less reactive towards electrophilic substitution compared to aniline?

Acetanilide is less reactive towards the electrophilic substitution than Aniline, as it donates electrons to the benzene ring and to the positively polarized carbonyl group, whereas Aniline donates electrons only to the benzene ring.

Why does the reactivity of gets reduced in acetanilide?

Lone pair of electrons present on amino group are in conjugation with benzene ring in aniline. But due to presence of acyl group in conjugation with amino group in acetanilide, lone pair of electrons on NH2 are no longer in resonance with benzene ring. This is the reason, activity of NH2 is reduced in acetanilide.

What is the rate determining step in electrophilic aromatic substitution?

The first step of electrophilic aromatic substitution is usually the rate-determining step. Since a new sigma bond forms in the first step, the intermediate is called a sigma complex. This carbocation is resonance stabilized, but is not aromatic because it has only four π electrons.

Which is more reactive aniline or phenol?

Phenols are said to be more acidic than aliphatic alcohols in that oxygen electron density is conceived to be delocalized around the ring. In contrast, phenols and anilines (whose reactivity is enhanced by lone pairs on the oxygen or the nitrogen) are many more times reactive towards electrophiles.

How do you test the reactivity of metals?

Place each of the metals in turn in a clean test-tube containing water and labeled with the symbol of the metal added. If bubbles of a gas are evolved, test the gas with a lighted match, this is called the pop test.