The benzene ring is oxidized to maleic anhydride when strongly heated with:
Correct answer: B. V2O5/450oC
- A. Ni/200oC
- B. V2O5/450oC
- C. AlCl3/150oC
- D. Sunlight
Explanation
The oxidation of benzene by V2O5 in the presence of air produces maleic anhydride. The oxidation is carried out at 500 oC. Benzene is oxidized in presence of V2O5 at 773 K, we get an anhydride along with CO2 and H2O.
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About Benzene and Aromatic Compounds
Benzene has a planar ring of delocalised π electrons, giving aromatic stability and equal carbon-carbon bond lengths. The topic covers resonance, electrophilic substitution reactions such as nitration, halogenation, sulphonation and Friedel-Crafts reactions, along with substituent effects and the distinction between substitution in benzene and addition in ordinary alkenes.
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