CONFIDENTIAL
1
CEEH/NOV 2021/CHE430/CHE495
UNIVERSITI TEKNOLOGI MARA
MID-TERM ASSESSMENT
COURSE
:
ORGANIC CHEMISTRY/ HYDROCARBON
CHEMISTRY
COURSE CODE
:
CHE430/ CHE495
DATE
:
NOVEMBER 2021
TIME
:
1 HOUR
INSTRUCTIONS TO CANDIDATES
1.
This question paper consists of three (3) questions.
2.
Answer ALL questions.
3.
Submit your answers in a pdf format file named as yourname_studentID. Submission in
another format will lead to difficulties in marking.
4.
The assessment duration is 1 HOUR, starts at 9.40 am and ends at 10.40 am. An additional
30 minutes will be given for you to upload your answers which ends at 11.10 am. Submission
after this period will not be accepted, thus, make sure you submit before the deadline.
5.
You are not allowed to discuss or consult with your classmates.
6.
Any act of plagiarism will be not be tolerated and is punishable according to UiTM rules and
regulations. By viewing this assessment, you have agreed to terms of the plagiarism act.
Name:
Student ID:
Group:
Question
1
2
3
Total
Marks
DO NOT TURN THIS PAGE UNTIL YOU ARE TOLD TO DO SO
This examination paper consists of 3 printed pages
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CONFIDENTIAL
2
CEEH/MAY 2021/CHE430/CHE495
QUESTION 1
(PO1,CO1)
a) Name the following molecules:
i)
ii)
Br
Br
Br
Cl
iii)
iv)
Br
Br
Cl
Cl
(8 marks)
b) Draw and name molecules with chemical formula of C7H12 based on the following criteria:
i)
ii)
Has only secondary hydrogens.
Has two sp carbons.
(4 marks)
QUESTION 2
(PO1,CO2)
a) Draw Newman projections of the most and least stable conformations of 2,3-dichlorobutane,
sighting at C2 and C3.
(4 marks)
b) Identify the most stable chair conformation of cis-1,3-dibromocyclohexane. Justify your answer.
(6 marks)
QUESTION 3
(PO1,CO2)
a) Calculate the degree of unsaturation in the following formulas, and draw a possible structure
containing at least one ring.
i) C8H8O2N2
ii) C8H10N2Cl2
iii) C8H8OBr4
(6 marks)
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3
CEEH/MAY 2021/CHE430/CHE495
b) Determine products of A to D from these reactions. Hint: C has more than one product.
D
1. Hg2+
2. NaBH4
1 mol of Cl2
A
H2
Pt
B
O3
C
(12 marks)
END OF QUESTION PAPER
© Hak Cipta Universiti Teknologi MARA
CONFIDENTIAL