Chemistry - Aromatic Hydrocarbon Question with Solution | TestHub

Explanation Question:

Question is asking about the most reactive ion is azocoupling reaction.

Concept:

This question is based on coupling reaction of benzene diazonium salt.

Solution:

Benzene diazonium is a weak electrophile, it show coupling reaction with highly activated benzene ring.

It-m group is attached at para position of benzene ring in diazonium salt, its electrophilicity increases and rate of coupling reaction increases.