Write the chemical reaction for the preparation of phenol from chlorobenzene.

(N/A) Chlorobenzene is fused with $NaOH$ (at $623 \, K$ and $320 \, atm$ pressure) to produce sodium phenoxide,which gives phenol on acidification.
The reaction is as follows:
$C_6H_5Cl + 2NaOH \xrightarrow{623 \, K, 320 \, atm} C_6H_5ONa + NaCl + H_2O$
$C_6H_5ONa + HCl \rightarrow C_6H_5OH + NaCl$