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…

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?

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?

Macroscale and Microscale Organic Experiments

7th Edition

ISBN:9781305577190

Author:Kenneth L. Williamson, Katherine M. Masters

Publisher:Kenneth L. Williamson, Katherine M. Masters

Chapter7: Extraction

Section: Chapter Questions

Problem 1Q

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