A. Write the reaction that occured when carboxylate salt was revoered into the o

Question

A. Write the reaction that occured when carboxylate salt was revoered into the original carboxylic acid.

B. Write the reaction that occured when a phenoxide salt was recovered into the orginal carboxylic acid.

This is post lab questions, below are images of the procedure and what we did to help you with writing out the reactions.

Part 1. Separation by Acid-base Extraction Formulas ArOH phenol You will use approximately 0.300 g of the sample. Record the mass with Arco H carboxylic acid all three decimal places but it does not have to be exactly 0.300 g. This neutral compound is a mixture of three unknown components with equal mass. You will Aro Na. phenoxide salt need this mass later for your recovery yield calculations. ArCO2 Na' carboxylate salt Note: label the tubes! Tube 1' Tube 1 One more extraction with 0.2 mL sat. NaHCO3; AroH add lower layer to tube 2 add 1ml. sat AroH ether NaHCO3 (aq) layer ether N ayer ArOH mix well, Separate ArCO2H let layers ArCO2 separate layers Tube 2 aqueous layer Dissolve 0.30 g mixture Wash with 0.2 mL ether If solid forms at this point, 2mL tert-butyl it is the carboxylate salt. Add Arco Discard methyl ether a few drops of water and mix ether layer Na (ether") well to dissolve all solid. Proceed to Recovery layer

Explanation / Answer

solution:

(A) The rection that takes place during the recovery of Carboxylate salt is is given as:

ArCO2-Na+ + HCl ---------> ArCO2H +NaCl

(B) The rection that takes place during the recovery of Phenoxide salt is given as:

ArO-Na+ + HCl -----------> ArOH + NaCl

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