Question

Construct flow charts (a.k.a. flow diagrams) to show how to separate each of the following pairs...

Construct flow charts (a.k.a. flow diagrams) to show how to separate each of the following pairs of water insoluble compounds: a) a carboxylic acid and a neutral compound (e.g., a hydrocarbon, R-H); b) a neutral compound and an amine; c) a phenol, a carboxylic acid and an amine (show two different flow charts for separation of this mixture).

Homework Answers

Answer #1

1. Alkanes are insoluble in water wheras carboxylic acids are soluble in water.

Step1- dissolve the mixture in aqueous solution.

Step2-transfer this solution to secondary funnel

Step3-Add a solution of strong base then water soluble salt forms which is the carboxylic part.

Stpe4-collect the aqueous layer

Step5-Adjust the pH of mixture to7 then water insoluble salt is formed which is Alkane.

Step6-transferto secondary funnel and andd organic solvent and shake vigorously.

Step7-Collect the Alkane and Carboxylic acid and remove solvent.

Amines and Alkanes : Amines arete substances which are moderately polar they have higher B.P. than Alkanes thus they seperated.

3.Phenols,carboxylic acid and Amines: The mixture can be seperarated on the bass of their solubility. Amines are organic bases,Carboxylic acids are strong acids and phenols are weak Acids tus they can be easily seperarated.

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