Answer:
Benzene can be converted benzoic acid by following steps.
Step 1:
Benzene is converted to toluene by Freidel Craft’s alkylation reaction.
\(C_{6}H_{6}\)→ \([CH_{3}Cl]{AlCl_{3}} C_{6}H_{5}-CH_{3}\)Benzene Toulene
Step 2:
The toluene is oxidized in the presence of strong oxidizing agent like KMnO4 to produce benzoic acid.
\(C_{6}H_{5}-CH_{3} \overset{KMnO_{4}}{\rightarrow} C_{6}H_{5}COOH\)Toluene Benzoic acid