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2002 Ochem II Exam 1 - Name First.Last C hemistry 3153 Exam...

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r- .. Chemistry 3153 Name: First. _______ .Last:..- ________ _ Exam 1 100 pts Please Show YOUI" Work Wednesday, Fehruary 6. 2002 I. (10) FiU in the correct term for each of the fol1owing detinitions. a) Structure suggested for a fonnula that shows 4 unsalurations b) Type of bond vibration that gives reliable absorption~ in the IR S. ~e...\-c~, ""'5 c) Measurement of the area under each IH NMR signal to tv\ k~le..h 0 >'"\ determine the number of protons repre.sente.ci d) General term for C~ prolons adjacent to a stereocenter J... '" '::kr",o~l?; (.. e) General term for a 13C NMR spectrum when: all C-H coupling _ .... ::D=--f'_P_I _____ _ 3. a) has been cancelled out (8) Lidocaine (MW 234) is a loca) anesthetic and an antiarrhythmic agent used to treat heart attack victims. The compound gives the analysis below. Determine the molecular formula. Useful atomic weights: C:::; 12.0; H = 1.008; N =: 14.0; 0 = 16.0. C 71.76% H 9.46% N 11.95q~J o 6.83% ~( )- 5.4& ( '-1 -::. \ 1'2· u .42.1 1'~~(. J ~ q. ~~S 22 (.Co~ :. ~<-t2-' Co. <C""':>( ') 1 '-· 0 ::~. '-~ -, [ C 1-1 N 0 "". ___ \ mo)ecular fonnuJa 11-1. :1.7. :1 , !.fL1 b) (4) A methanol solution of 0.0412 giL of Jidocrun·e (MW 234) in a 1 em cell show!4 an absorption of 1. J 2 at 232 nm.
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