STUDENT NAME
STUDENT #
HAND IN
PUT NAME/STUDENT# Answers recorded on exam paper
ON TOP OF EVERY PAGE
QUEEN’S UNIVERSITY FINAL EXAMINATION
FACULTY OF ARTS AND SCIENCE
DEPARTMENT OF CHEMISTRY
CHEM281 DR JOHN CARRAN
Summer 2025
INSTRUCTIONS TO STUDENTS:
This examination is 3 HOURS in length.
There are 2 sections to this examination.
Please answer all questions on the scantron provided for multiple choice section I and in
the spaces provided in this exam booklet for section II
The following aids are allowed:
Casio FX-991 calculator
Molecular models
Put your student number on all pages of all answer booklets, including the front.
GOOD LUCK!
PLEASE NOTE:
Proctors are unable to respond to queries about the interpretation of exam questions.
Do your best to answer exam questions as written.
This material is copyrighted and is for the sole use of students registered in CHEM281 and
writing this exam. This material shall not be distributed or disseminated. Failure to abide by
these conditions is a breach of copyright and may also constitute a breach of academic integrity
under the University Senate's Academic Integrity Policy Statement.
For TA use only
SECTION II Q41 Q42 Q43 Q44 Q45 Q46 TOTAL/30
Mark
TA signature
Page 1 of 27
, STUDENT NAME
STUDENT #
Section I Main course multiple choice questions. 1 mark per question, 40 questions. ANSWER
ON SCANTRON SHEET PROVIDED
1.” What is the formal charge on the nitrogen atom in the following compound?
N,
A. +1
B. +2
C. -1
"D. -2
E. 0
2. How many lone pairs of electrons are on the indicated oxygen atom?
one
o @ »
two
mo
three
four
none
Page 2 of 27
, STUDENT NAME
STUDENT #
3. Which of the following pairs are resonance structures of each other?
I./\/\ /k/ "./i' j\
. V. .
/\/\ /\/\ =N /\I\E
A. I
B. Il
C. Hl
D. v
E. None of these
4. Which of the following violates the rules for curved arrows?
H ~\ |
N@
H H
\C
= H
)
:A
‘.O).
I
C
| I Hi \Y
A. I
B. Il and IV
C. I and Il
D. Il and {V
E. None of these
Page 3 of 27
STUDENT #
HAND IN
PUT NAME/STUDENT# Answers recorded on exam paper
ON TOP OF EVERY PAGE
QUEEN’S UNIVERSITY FINAL EXAMINATION
FACULTY OF ARTS AND SCIENCE
DEPARTMENT OF CHEMISTRY
CHEM281 DR JOHN CARRAN
Summer 2025
INSTRUCTIONS TO STUDENTS:
This examination is 3 HOURS in length.
There are 2 sections to this examination.
Please answer all questions on the scantron provided for multiple choice section I and in
the spaces provided in this exam booklet for section II
The following aids are allowed:
Casio FX-991 calculator
Molecular models
Put your student number on all pages of all answer booklets, including the front.
GOOD LUCK!
PLEASE NOTE:
Proctors are unable to respond to queries about the interpretation of exam questions.
Do your best to answer exam questions as written.
This material is copyrighted and is for the sole use of students registered in CHEM281 and
writing this exam. This material shall not be distributed or disseminated. Failure to abide by
these conditions is a breach of copyright and may also constitute a breach of academic integrity
under the University Senate's Academic Integrity Policy Statement.
For TA use only
SECTION II Q41 Q42 Q43 Q44 Q45 Q46 TOTAL/30
Mark
TA signature
Page 1 of 27
, STUDENT NAME
STUDENT #
Section I Main course multiple choice questions. 1 mark per question, 40 questions. ANSWER
ON SCANTRON SHEET PROVIDED
1.” What is the formal charge on the nitrogen atom in the following compound?
N,
A. +1
B. +2
C. -1
"D. -2
E. 0
2. How many lone pairs of electrons are on the indicated oxygen atom?
one
o @ »
two
mo
three
four
none
Page 2 of 27
, STUDENT NAME
STUDENT #
3. Which of the following pairs are resonance structures of each other?
I./\/\ /k/ "./i' j\
. V. .
/\/\ /\/\ =N /\I\E
A. I
B. Il
C. Hl
D. v
E. None of these
4. Which of the following violates the rules for curved arrows?
H ~\ |
N@
H H
\C
= H
)
:A
‘.O).
I
C
| I Hi \Y
A. I
B. Il and IV
C. I and Il
D. Il and {V
E. None of these
Page 3 of 27
