Arizona State CHM 233 exam2key

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Published on 7 Mar 2019
School
ASU
Department
Chemistry
Course
CHM 233
Professor
Midterm #2 Ian R. Gould
Person on your LEFT (or Empty or Aisle)
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 Lu Hf Ta W Re Os Ir Pt Au Hg Tl Pb Bi Po At Rn
CHEM 233, Fall 2016
H/H ~1.0
Eclipsing
H/Me ~1.4
Me/Me ~2.6
Me/Me ~0.9
Et/Me ~0.95
i-Pr/Me ~1.1
t-Bu/Me ~2.7
Gauche
Et/Et ~3.1
Interaction Energies, kcal/mol
Person on your RIGHT (or Empty or Aisle)
CNR2
RC CR
R2CCR2
Aromatic
C
ROH
O
CX
RNH2
ROH
020406080100120140160180200220
–H2CX
H2CNR2
–OCH2
01234567891011
CCH
CH
O
C
ROH
OAromatic Ar H Alkyl
mainly 8 - 6.5 CCH2
CCH3
O
3° > 2° > 1°
Alkyl
–OCH2
C
O
(δ, ppm)
variable and condition dependent,
ca. 2 - 6 δ
RCN
OHCN
C
N
C
C
H
C O
N H
CH
CN
O
HC
O
C
H
CCH
COR
O
N H
CH
C
O
OH
C O H
O
CNR2
O
3000–
3100
2850–2960
3300
broad ~3300
broad with spikes ~3300
2200
broad ~3000 1710
2200
1650
2720–2820
2 peaks
1735
1600–1660
1680
range of values
broad peak
small range usually
strong
1600
Infrared Correlation Chart
NMR Correlation Charts
3000 2000
2500
3500 1500
(cm-1)
!PRINT YOUR NAME ON EACH PAGE!
• READ THE DIRECTIONS CAREFULLY!
• USE BLANK PAGES AS SCRATCH PAPER
work on blank pages will not be graded...
3° > 2° > 1°
The room where most students will take the test for your
class, i.e. LS A-191 for onground and PS H-152 for hybrid)
COMPLETE THIS SECTION : Up to TWO POINTS will be removed for incorrect/missing information!
**YOU ARE NOT ALLOWED TO TAKE SPARE COPIES OF THIS EXAM FROM THE TESTING ROOM**
PRINTED FIRST NAME PRINTED LAST NAME
Class you are REGISTERED FOR (onground or hybrid)
• WRITE CLEARLY!
• MOLECULAR MODELS ARE ALLOWED
• DO NOT USE RED INK
• DON'T CHEAT, USE COMMON SENSE!
Answer Key
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1_____________/13
2_____________/24
3_____________/26
4_____________/18
5_____________/18
6_____________/24
7_____________/18
8_____________/24
9_____________/10
Midterm #2 Ian R. Gould
CHEM 233, Fall 2016
Points by question
Total (incl Extra)________/175+5
nomen
res3
chairs1
IR spectra
res1
res2
newman
Extra Credit_____/5
Points Removed for cover errors ____/2
PRINTED
FIRST NAME
PRINTED
LAST NAME
ASU ID or
Posting ID
ANSWER KEY
YOU MUST COMPLETE THIS PAGE WITH YOUR NAME
(EVEN THOUGH YOU ALREADY DID THIS ON THE COVER PAGE)
AND ALSO GIVE YOUR ASU OR POSTING ID NUMBER
WE NEED THIS NUMBER BECAUSE YOU WOULDN'T BELIEVE THE NUMBER OF
STUDENTS WHOSE NAMES WE CAN'T READ!
**YOU ARE NOT ALLOWED TO TAKE SPARE COPIES OF THIS EXAM FROM THE TESTING ROOM**
IR explain
newman2
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Document Summary

Complete this section : up to two points will be removed for incorrect/missing information! Person on your left (or empty or aisle) Person on your right (or empty or aisle) Class you are registered for (onground or hybrid) The room where most students will take the test for your class, i. e. ls a-191 for onground and ps h-152 for hybrid) 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 lu hf ta w re os ir pt au hg tl pb bi po at rn. Infrared correlation chart small range range of values broad peak. You must complete this page with your name (even though you already did this on the cover page)