8. Which (if any) after being dissolved in diethyl ether, will: (6 points) b) Ex

Question

8. Which (if any) after being dissolved in diethyl ether, will: (6 points) b) Extract into HCl/H2O? c) Extract into neutral water? a) Extract into NaOH/H20? 9. Rank the following in order of increasing basicity, 1 being most basic, 3 being least (3x2 pts) a.NaOH CH3MgBr CH3NH2 Me2NH NH3 CH3CO2Na c.pyridine benzamide (PhCONH2) methylamine 10. Rank the acidity of the following, 1 being most acidic, 3 being least (3x2 pts) a. NH4 CI acetic acid 2,2-difluoroacetic acid PhCH2OH PhOH PhCO2H water p-nitrobenzoic acid benzoic acid

Explanation / Answer

Ans9 = basicity order = NaOH> CH3MgBr> CH3NH2

CH3CO2Na> Me2NH> NH3

methlamine> pyridine> benzamide

Ans10 = acidity order = 2,2-difluoroacetic acid> acetic acid> NH4+Cl-

PhCO2H> PhOH>PhCH2OH

p-nitrobenzoic acid > benzoic acid> water

ans8 = carboxylic acid extract into NaOH/ H2O

amine group will extract into HCl/ H2O

alcohol group will extract into neutral water.

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