CHEM 219 Module 3 Exam | Portage Learning

CHEM 219 Module 3 Exam

Q1Characterize each of the following objects as being chiral or achiral:

a. Pencil- a. achiral
b. Wine Glass b. achiral
c. Baseball Glove c. chiral
d. Orchestra Conductors' Baton d. achiral
e. Scissors e. chiral

Q2 Draw each of the following structures on a piece of paper. Identify any stereo centers in
each indication the carbon number corresponding to a stereo center. If there are no stereo
centers in a compound state “none”.

A. 1,2-dimethycyclohexane a. stereocenters at C1 and C2
B. 2,3,4-trimethylhexane b. stereocenters at C3 and C4
C. 1-bromo-1,2-dichloropropane C. None

Version2: A. 2,3-dimethylbutane a: none

B.3-methylhexane b. stereocenters at C3

C. 1-bromo-2-chloropropane C. stereocenters at C2

Q3 Assign priority order (1-4; is greatest priority) to the following four groups for the purpose
of deterring R and S configurations at a stereocenter.




i) 2,1,3,4

ii) 1,2,4,3

, Version2

i) 3, 1, 2,4
ii) 4, 3, 2, 1

Q4 Based on the direction of twist of the following groups, assign an R or S orientation.




S orientation R orientation R orientation




S orientation R orientation S orientation