Question

Experiment 3.5B Acid / Base Separations scheme worksheet Consider the following acid base separation scheme. Initialy, all compounds are dissolved in methylene chiloride and tne solution is extracted by 10% HCI . You will finish the extraction scheme with the following reagents: 10% HCI, 10% NaOH, Na SO Be sore to inclede the reagents and steps required so finish the estraction scheme. In the boses indicate which compounds (structures) are present in each layer after the extraction steps. (More than one compound can be in any box). HaN OH All these compounds are dissolved into CHCl 10% HCI Organic Aqueous layer layer 10% NaOH 10% NAOH Aqueous layer Organic layer How would you Isolate the product? How do you 10% HCI Isolate product? How do you Isolate product?

Answer 1

Initially added HCl reacts with base ,aniline and forms salt in aqueous medium and amine is regenerated by adding Dil.NaOH.

And NaOH forms salt with Carboxylic acid in aqueous medium and acid is regenerated by adding HCl to sodium salt.

And neutral biphenyl goes into organic layer and on distillation Purr biphenyl separates out.

Ho Alueoul ovganic + 101-Nao Aqueob vganc -Nh BNacy + Decantation Loihon -OH crystolisatia