{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}


SS08%20140B%20midterm%20exam - CHEMISTRY 140B NAME(please...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEMISTRY 140B NAME (please print) MIDTERM EXAM FIRST LAST A UG 18, 2008 (C P 10-13, V&S 5 TH ED ) SIGNATURE ID NUMBER LAST NAME OF PERSON SEATED TO YOUR RIGHT : LAST NAME OF PERSON SEATED TO YOUR LEFT : DO NOT OPEN THE EXAM UNTIL YOU ARE TOLD TO DO SO . Please sign your name on the top of pages 1 through 7. Please check that you have 10 pages (including this one; page 10 is blank for your scratch work). Page 8 and 9 contain tables of NMR and IR data. - Answer only in the space provided. Do not write answers on the back of a page. _____________________________________ Question Points Score _____________________________________ 1. 70 _____ 2. 55 _____ 3. 50 _____ 4. 25 _____ _____________________________________ Total 200 _____ _____________________________________ H He Li Be B C N O F Ne Na Mg Al Si P S Cl Ar K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Ga Ge As Se Br Kr Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te I Xe Cs Ba La Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
NAME:________________________________ 2 1a. ( 36 pts) On the lines provided, indicate the number of hydrogen and carbon signals present in the 1 H and 13 C NMR spectra for each molecule shown below (assume all samples are at room temperature and that a distinct resonance would be observed for nuclei in different environments): H C H C H C H C O Me Me OH O Br Br 1b. (20 pts) On the line provided, indicate the number of triplets expected in the 1 H NMR spectrum of each molecule. Assume that hydrogens in two different environments will exhibit different coupling constants to hydrogens in a third environment. Also assume that allylic and geminal couplings will be observable.
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}