Question

anthracene on oxidation with sodium dichromate forms napthaquione​

Answer 1

Answer:

chromic acid and sulfuric acid is oxidized to 1-2-anthraquinone; a reaction which would ordinarily easily oxidize the 9-10 position: in the central nucleus. and the hydro xyl groups in the 1-2 positions so stabilizes the central nucleus that it is not easily attacked.

Answer 2

SODIUM DICHROMATE OXIDISES ANTHRACENE TO ANTHRAQUINONE.

Explanation:

• The oxidation reaction are those in which oxygen atoms get attached to the molecule.
• Sodium dichromate is an oxidizing agent(O.A).
• Anthracene is an aromatic ring, having 3 benzene rings attached to each other. Its formula is $C_{14} H_{10}$.
• When treated with sodium dichromate it oxidizes to form anthraquinone, the middle ring forms two C=O bonds.
• 9, 10 addition takes place as out of 3 rings, aromaticity is preserved in 2 rings, in other words aromatic sextet is preserved in 2 rings.