Which of the following statements is correct?

Options

A. All aromatic substitution reactions are irreversible.
B. Most aromatic substitution reactions are irreversible.
C. All aromatic substitution reactions are reversible.
D. Most aromatic substitution reactions are reversible.

Answer

2

Explanation

The energy barrier for the reaction of the sigma complex to form products is less than the energy barrier for the reverse reaction of `E^(+)`: If it were not, the first step would be fast and reversible and not rate-controlling.