Question

I'm to develop a separation or purification scheme for the following mixtures:
50% benzoic acid, 40% benzoin, 10% 1,4-dibromobenzene
50% fluorene, 40% o-toluic acid, 10% 1,4-dibromobenzene
50% ethyl 4-aminobenzoate, 40% benzoin, 10% 1,4-dibromobenzene
50% ethyl 4-aminobenzoate, 40% benzil, 10% 1,4-dibromobenzene
50% o-toluic acid, 40% fluorene, 10% 1,4-dibromobenzene
The mixture is first dissolved in either diethyl ether or methylene chloride. And the available reagents are 1M NaOH, 6M NaOH, 1M HCl, 6M HCl, 1M NaHCO3, saturatedsodium chloride, diethyl ether, 95% ethanol, methanol, isopropyl alcohol, acetone, hexane, toluene, methylene chloride, and granular anhydrous sodium sulfate.

Answer 1

In your all mixture one of the component is either acid or base this you can seperate by acid base extraction.

Other mixture should separate by re crystalization here i am showing flow charts for two mixtures remaining also in similar way.