Dr. Focs Midterm 1 - CHM1321 Practice Midterm 1 1 FAMILY...

CHM1321 Practice Midterm 1 1
FAMILY NAME GIVEN NAME
Student number: Lab. Day:
Lab. TA:
CHM1321 ORGANIC CHEMISTRY I
PRACTICE MIDTERM 1
Time allowed: 70 minutes.
Part A B:1 B:2 Total
Points 10+1 5 5 20+1
Mark
TA Notes
Part A: No partial marks in Part A - Each question is 0.5 marks
(1) There are six (6) isomers of formula C
4
H
8
. Fill in the boxes with the two missing
ones.

CHM1321 Practice Midterm 1 2
(2) List the following elements in order of increasing electronegativity:
F, O, Li, C order is:
(3) Which of the following is an exception to the octet rule? (circle or underline)
NH
4
+ BF
3
ClCH
3
(4) Pushing electrons: Show the arrows indicating electron displacements leading
from resonance form I to III of the carbonate ion. Add the electron pairs wherever
there are lone pairs.
(5) Write the formulas for:
(a) 2,3,4-trimethylpentane
(b) cis -dichloroethene
O C
O
O
O C
O
O
I II
O C
O
O
III

CHM1321 Practice Midterm 1 3
(6) What is the conjugate acid of NH
3
?