Question

In: Chemistry

An extraction .............. is a convenient way to display each of the steps of a reactive...

An extraction .............. is a convenient way to display each of the steps of a reactive (or acid-base) extraction.

Solutions

Expert Solution

First let's understand extraction:

Extraction is a process of extracting the target material from a solid by dissolving the material into a solvent (solid-liquid extraction) or  extracting the target material from a solvent byusing another solvent.

An acid - base extraction is a type of liquid - liquid extraction in which if one of the compounds to be extracted is an acid or a base, the extraction is done by manipulating the solubility of the compound.

An example is pasted below:

Suppose we have a ether containing carboxylic acid and we want to extract it

Step1: Add a base to the ether to react with the acid in it to form salt.

Step2: Select a solvent, water in this case, to dissolve the salt of the acid.

Step3: Using drying remove the ether from the aqueous layer

Step4: The aqueous solution which is now basic is treated with an acid to precipitate the carboxylic acid which is insoluble in water.

Now to note all these steps a FLOW DIAGRAM / Stepwise Diagram with structures as a prelab routine is a convenient way to display each of the steps of a reactive (or acid-base) extraction.


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