Chem 219 PRACTISE 3 WITH QUESTION
AND ANSWERS.
, Characterize each of the following objects as being chiral or achiral:
a. Pencil
b. Wine Glass
c. Baseball Glove
d. Orchestra Conductors' Baton
e. Scissors - correct ans:a. achiral
b. achiral
c. chiral
d. achiral
e. chiral
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
b. 2,3,4-trimethylhexane
c. 1-bromo-1,2-dichloropropane - correct ans:a. stereocenters at C1 and C2
b. stereocenters at C3 and C4
Question 2 part 2: 2,2 dichloropropane, 1,2 dichloroputane, 2 methylhexane -
correct ans:a. none
b. one stereocenter at C2
c. one stereo center at C2
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 - correct
ans:i. 3, 1, 2, 4
AND ANSWERS.
, Characterize each of the following objects as being chiral or achiral:
a. Pencil
b. Wine Glass
c. Baseball Glove
d. Orchestra Conductors' Baton
e. Scissors - correct ans:a. achiral
b. achiral
c. chiral
d. achiral
e. chiral
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
b. 2,3,4-trimethylhexane
c. 1-bromo-1,2-dichloropropane - correct ans:a. stereocenters at C1 and C2
b. stereocenters at C3 and C4
Question 2 part 2: 2,2 dichloropropane, 1,2 dichloroputane, 2 methylhexane -
correct ans:a. none
b. one stereocenter at C2
c. one stereo center at C2
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 - correct
ans:i. 3, 1, 2, 4
