Lab Report

Chima Nwakpuda T: T: !e" #o$a!

Date Performed in Lab: March 20, 2015 Due Date of %eport: March 2&, 2015

Experiment 8B: 8B: '(terification %eaction ) *(opent+! cetate, and the u(e of cidic %e(in( Objective: Objective: Thi( e"periment e"p!ore( the c!a((ic reaction( of carbo"+!ic acid( with a!coho!(, in the pre(ence of acid cata!+(t, to +ie!d e(ter( with the addition o f water *n the !ab the ph+(ica! propertie( of the(e e(terification product( are e"amined and the techni-ue of .a( chromato.raph+ wa( app!ied to the purification of the(e materia!( The a!coho! u(ed in thi( reaction wa( i(opent+! a!coho! with the carbo"+!ic acid acetic acid in the pre(ence of acid cata!+(t (u!furic acid Experimental Procedure: Procedure: The procedure wa( fo!!owed a( de(cribed in Ma+o, pa.e( 201) 202, with the fo!!owin. modification(: Reagents and Equipment / The reaction wa( (et up on a (ca!e of  what i( de(cribed in the !ab te"tbook /  50)mL conica! $ia! wa( (ti!! u(ed / ub(tituted Drierite for ca!cium ch!oride in the dr +in. tube Reaction Conditions / Did not (top the (pin $ane whi!e the reaction mi"ture wa( coo!in. to ro om temperature %ai(ed the $ia! out of the (and bath to be.in coo!in., but not (o hi.h that the (pin $ane (topped rotatin. / Did not cut the amount of dieth+! ether in ha!f, but added the fu!! 05 mL / 3hen remo$in. the (pin $ane with forcep( or a wand ma.net, ma.ne t, u(ed the dieth+! ether 405 mL to rin(e the (pin $ane 4an+ product remainin. on the (pin $ane wa( then wa(hed back into the %eaction $ia! Isolation of Product / Continued on a (ca!e of  what i( de(cribed in the !ab te"tbook and cut in ha!f a!! workup  mount( / Did not di(ti!! product Tran(ferred dried ether (o!ution containin. the product to   tared, tared, (crew)cap te(t tube / Concentrated the crude product (o!ution a( u(ua! 6btained the product wei.ht Purification and Characterization / The crude product wa( ana!+7ed b+ .a( chromato.raph + Chemical Tests Tests / 6mit thi( (tep Reaction Scheme: Scheme:

Data and Results: Compound

Mo!ecu!ar 8ormu!a

M3

mount

mmo!

bp4C d 

*(opent+! !coho!

C59126

15

;00 uL