SAMPLE EXAM 2 – Unit 3 & 4 Chemistry Time: 50 minutes Number of Marks: 44 Marks
SECTION A – Multiple-choice questions SOLUTIONS
Q1. (NEAP)
The
... [Show More] compound methanol is made by the exothermic reaction of carbon
monoxide and hydrogen.
CO (g) + 2H2(g) ⇋ CH3OH(g) ; ΔH = -89.9 kJ mol-1
The reaction is slow at room temperature and pressures. An increase in
both the yield of methanol at equilibrium and the rate of the reaction
could be achieved by
A. Increasing the pressure at a constant temperature
B. Increasing the temperature to 600oC
C. Adding a suitable catalyst
D. Cooling the system
Q2. (Q2. Neap 2.2.8)
Two tests were conducted to help establish the identity of a liquid
organic compound. The compound reacted with solid sodium carbonate
to evolve a colourless, odourless gas. When bromine was added to the
compound, a reaction occurred to produce a colourless product.
Which of the following is the compound most likely to be?
A. Methyl propenoate
B. 2-hydroxybut-1-ene
C. Propenoic acid
D. 2-aminobut-1-ene
Q3. (NEAP 2.1.7)
How many peaks are expected on the low resolution 1H NMR spectrum of 2-methylpropane?
A. 2
B. 3
C. 4
D. 5
Q4. (NEAP 2.1.9)
Consider the formula, NMR and IR data provided below.
Formula: C3H6O2
IR: sharp band near 1720 cm-1
1H NMR: two singlet peaks at 2.1ppm and 3.7 ppm
Which of the following organic compounds is consistent with the above information?
A. Propan-2-ol
B. Methyl ethanoate
C. Propanoic acid
D. Propanamine
Q5. (NEAP 2000 Q3)
Many simple life forms rely on fermentation of glucose to provide their energy needs, whilst more complex
organisms use the energy produced by aerobic respiration. Both fermentation and aerobic respiration
A. Produce the same amount of energy per gram of glucose
B. Produce carbon dioxide and water as products of the reaction
Multiple Choice Answer Sheet
Instructions:
Use a pencil for all entries. If you make
a mistake, erase the incorrect answer –
do not cross it out.
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C. Require energy from sunlight to proceed
D. Rely on enzymes to catalyse the reactions involved
Question 6 and 7 refer to the following information
Ethanol may be produced by the fermentation of glucose, as shown by the fo [Show Less]