Write the chemical equation for the preparation of phenol from benzene using oleum and sodium hydroxide. [Delhi 2011(C)]

Write the chemical equation for the preparation of phenol from benzene

1.	Write the chemical equation for the preparation of phenol from benzene using oleum and sodium hydroxide. [Delhi 2011(C)]
Answer» EXPLANATION: SULPHONATION of benzene with oleum to form benzenesulphonic ACID. Benzenesulphonic acid is converted to sodium phenoxide on heating with molten NaOH. Acidification of sodium salt to GIVE phenol.