a) From this flow chart, which acid is extracted when sodium bicarbonate is used as an extraction solvent? Explain, use knowledge of pKa, why this acid is extracted as opposed to the other acid present.b) What would be the end results if you first extract with NaOH, and then with NaHCO3?c) What would be the results after the addition of HCl to the NaOH extract and the NaHCO3 extracts? Mixture dissolved in organic solvent: dichloromethaneноbenzoic acid2-naphthol1,4-dimethoxybenzeneExtract with 25 mL of 10% NaHCO3 (3 times)organic layeraqueous layer = NaHCO3 extractseparateNa*HO+2-паphthol1,4-dimethoxybenzendsodium benzoateExtract with 25 mL of 10% NaOH (3 times)Place on iceAdd HCl until pH< 3organic layeraqueous layer = NaOH extractNa* Cr`OHNasodium chloridebenzoic acid1.4-dimethoxvbenzeneprecipitateaqueousAdd Na,(SO4)Place on iceAdd HCl until pH < 3FilterEvaporate dichloromethaneRecyrstallize in methanolHONa* Chsodium chloride2-naphthol

a. Benzoic acid strong acid and reacts with sodium bicarbonate (weak base). Phenol cannot react with…

Answered: a) From this flow chart, which acid is…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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a) From this flow chart, which acid is extracted when sodium bicarbonate is used as an extraction solvent? Explain, use knowledge of pKa, why this acid is extracted as opposed to the other acid present.

b) What would be the end results if you first extract with NaOH, and then with NaHCO3?

c) What would be the results after the addition of HCl to the NaOH extract and the NaHCO3 extracts?

Mixture dissolved in organic solvent: dichloromethane
но
benzoic acid
2-naphthol
1,4-dimethoxybenzene
Extract with 25 mL of 10% NaHCO3 (3 times)
organic layer
aqueous layer = NaHCO3 extract
separate
Na*
HO
+
2-паphthol
1,4-dimethoxybenzend
sodium benzoate
Extract with 25 mL of 10% NaOH (3 times)
Place on ice
Add HCl until pH< 3
organic layer
aqueous layer = NaOH extract
Na* Cr
`OH
Na
sodium chloride
benzoic acid
1.4-dimethoxvbenzene
precipitate
aqueous
Add Na,(SO4)
Place on ice
Add HCl until pH < 3
Filter
Evaporate dichloromethane
Recyrstallize in methanol
HO
Na* Ch
sodium chloride
2-naphthol

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