Which electrophilic aromatic substitution reaction is reversible? a. nitration b. alkylation c. alkanoylation d. sulfonation e. halogenation

D. Sulfonation

Explanation:

Electrophilic aromatic substitution -

The subsitution reaction , where the hydrogen atom of an aromatic ring is replaced by an external electrophile .

Sulfonation reaction -

The subsitution reaction , where the hydrogen atom of an aromatic ring ( benzene) is replaced by an sulfonyl group , is called an Sulfonation reaction .

The Sulfonation reaction is reversible in nature , because , heating of aqueous sulfuric acid with sulfonic acid , can lead to a reverse reaction , i.e. , desulfonation .

the molecules move in straight line until they collide with each other or with the walls of the container. collisions are perfectly elastic; when two molecules collide, they change their directions and kinetic energies, but the total kinetic energy is conserved.

explanation:

the answer is 1260

you spend 7 hours in school for 1 school day with 5 school days in 1 school week with 36 school weeks in a school year.

7*5*36= 1260 it's all about multiplying