Question

Starting Materials: 0.25 4-Aminobenzoic Acid mL; _moles Ethyl Alcohol 2.5 mL; moles BA 0.3 Conc. H2SO4 mL; moles Product: 0.08 g of product Formula Weight: g/mole; Isolated Yield: -8; Yield Appearance:

Answer 1

mass Solution given, of 4-aminobenzoic acid Volume of ethyl alcohol Volume of conc- H₂SO4 0.25g = 2.5mL 0.3mL 0.08g isolated yield COOCH,CH3 COOH Conc. H₂SO4 NH2 + CH, OH + H₂O ethyl alcohol NH2 inal=469) 4-aminobenzoicacid benzocaine (1 mel=1379) (Inel = 165g) In this reaction conc. Hesoy is catalyst and catalyst conselmed in the reaction. never 1.37g/mL 0-789 g/mL density of 4-aminobenzoic acid density of ethyl alcohol volume of 4-aminobenzoic acid = MASS (density = volume 0.25g 1-379/L 0.18 mL mass of ethyl alcohol = 2.5mL X 0.129.9/m2 (mass = density x volume 1.97259 Melarmass of 4-amino benzoic acid( G4NO2)- 7XR+7X1 +1X14+2x16 137g/mol Melarmass of ethyl alcohal (C2H5OH) = 2X12+5X1 +16+1 = 46 g/mol melarmass of benzocaine (GH, NO2 )= 9X12+ 11x1+14+2x16 = 165g/mal CS Scanned with CamScanner

hass moles of 4-amino benzoic acid = 0.25g (malarmass = 137g/mical moles) 0.00182mcel males of ethylakohal = 1.97259 46 g/mol 0.04288 mal = 0.043 mal From the above chemical reaction it is clear that " med 4-amino benzoic acid reacts with I mal ethyl alcohol 0.001875 maal 4-aminobenzoic acid reacts with Imel Yo-001225mid ethyl Imal 0.001835 mal ethylalcofiel So, 4-aminobenzoic acid is limiting rractant. I meel 4- amino benzoic acid produces I mal benzocaine -", 0.001225 meel 4-amino benzoic acid produces I mulxo-001825 med Imol alcohol benzocaine = 0.001825 mel benzocaine mass of benzocaine produce = mcells X mcelarmass of benzocaine = 0.001825 mal x 165g/mal 20:301125 g yield of benzocaine = 0-3011259 Isolated yield (Actual yield)= 0.00 g % yield Isolated yield (Actual yield) Theoretical yield Theoretical Xloo 0.089 xloo 0-3011259 26.567 of CS Scanned with CamScanner

% yield = 26.58% density of conc. H2SO4 = 1.84 g/mL mass of Conc. H₂SO4 = 1.84 g x 0.3 mL ml = 0.5529 Melasmass of Conc- H2SO4 = 2X1+33+4x16 - a&glmal males of conc. H₂SO4 = 0.5529 98g/mal 0.0056 mal Ethyl alcohol Starting materials 4-aminobenzoic acid 0.18ml ; 0.254; 0-0018?5 males 2.5ml; 1.9725g ; 0.043 holes Conc H₂ SOy 0-3 ml ; 0.5529 ; 0.0056 moles Product: (benzocaine) Formula weight 165 g/mol Isolated yield: d.odg ; (actual yield) Theoretical yield 0.301125 % giedd 26.58% Appearance : 94. is colourless Crystal . CS Scanned with CamScanner