Question

92. Phenol, when treated with conc. H2SO. at low. temperature gives
(A)o-phenol sulphonic acid
(B) m-phenol sulphonic acid
(C) p-phenol sulphonic acid
(D) all these​

Answer 1

Explanation:

A)o-phenol sulphonic acid

Answer 2

Answer:

A) ortho slphonic acid

Explanation:

This is because of:

1) electrophillic aromatic substitution mechanism and

2) o-sulphonic phenol is stable due to intramolecular H-bonding known as chelation

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