00:01
Dear students, the question is, in electrophilic aromatic substitution reactions, it is true that benzene forms an aromatic carbocation, the benzene ring acts as a nucleophile, all reactions with benzene are reversible, benzene ring is more reactive than cyclohexene.
00:20
Now let us first try to understand electrophilic aromatic substitution reaction by taking nitration of benzene.
00:30
We know, benzene in the presence of mixture of concentrated nitric acid and sulphuric acid forms nitrobenjin.
00:48
And here the electrophile is no2 plus, this is the electrofile, that is the nitrogenium ion is the electrolyte.
01:00
Now, no2 contains positive charge and this electrophile attacks benzene, that means benzene engine must be rich in electrons.
01:09
This clearly shows that because no2 is a possibly charged ion, it clearly shows that benzene ring must be rich in electrons.
01:20
Then the because since it is rich in electrons, therefore it acts as a nucleophile or nucleus lover or positive lover.
01:31
Nucleophile or positive charge lover.
01:37
It is, it becomes a positive charge lover.
01:45
And we know benzene is extra stable due to the presence of resonance also.
01:51
So it has resonance energy and that resonance energy makes it more stable.
01:57
Now coming to the options here the electrophilic aromatic substance reaction, it is true that benzene forms an aerobatic carbogatium.
02:06
This is wrong, not aromatic carbogatoyan...