Devise a procedure for the separation and purification of the
mixture containing 0.25g benzoic acid, 0.20g benzil, 0.05
p-dichlorobenzene.
Available reagents: 1M NaOH, 1M HCI, 1M NaHCO3, 6 M NaOH, 6 M
HCI, saturated solution of NaCl, diethyl ether, 95% ethanol,
methanol, isopropyl alcohol, acetone, hexane, toluene, ethyl
acetate, anhydrous sodium sulfate.