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Instructions
Students are allowed to use a non-programmable scientific calculator during the test.
Provide full solutions for all questions. This test contains [] pages. It is your responsibility to ensure that
all pages are present. The last 2 pages contain the periodic table and other useful resources. You may
write on these tables as you wish.
Mark Breakdown:
Unit
Organic
Thermodynamics
Equilibrium
Electrochemistry
Atomic Theory
Grand Total
Explanation
3
1
2
3
3
Problem Solving
22
9
16
10
10
/79
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Please answer the following questions in the space provided. Part marks will be awarded for partial
answers. GOOD LUCK!
Explanation Questions
1. Why do compounds form different shapes? (3 marks)
2. What does the specific heat capacity of a substance measure? (1 mark)
3. Explaining how removing reactant will affect the equilibrium of a reaction. (2 marks)
4. What does a standard reduction table represent, and how is it used? (3 marks)
5. What is the current model of electrons in an atom? (3 marks)
Problem Solving Questions
1. Draw the following compounds: (2 marks each)
a. butan-2-ol
b. 4-methyl pentan-2-one
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c. 2-fluoro-3,3,6-trimethylnonane
d. 3,4-diethylhexane
e. propene
f.
3,3-dimethylhexane
2. Name the following compounds: (2 marks each)
a.
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i.
b.
c.
3. Identify the type of reaction shown below as addition, elimination, condensation, substitution,
oxidation, hydrolysis, or reduction. (1 mark each)
a.
b.
c.
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d. Pentan-2-ol reacts with KMnO4 to produce pentan-2-one.
4. Calculate ΔH for the reaction:4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2 𝑂(𝑙) from the following data.
(3 marks)
N2(g) + O2(g) → 2 NO(g)
N2(g) + 3 H2(g) → 2 NH3(g)
2 H2(g) + O2(g) → 2 H2 O(l)
ΔH = −180.5 kJ
ΔH = −91.8 kJ
ΔH = −483.6 kJ
5. The molar enthalpy of solution for sodium acetate (CH3COONa) is -24.6 kJ/mol. How much
sodium acetate is needed to raise 125.0 mL of water from 20.0 °C to 28.0 °C? (3 marks)
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6. When 2.65 g of calcium chloride (CaCl2) is added to 100.00 mL of water, the temperature rises
from 23.0°C to 30.1°C. What is the molar enthalpy of solution? (3 marks)
7. The following equilibrium reaction has a Keq value of 2.5×10-6:
2 CO2(g) ⇌ 2 CO(g) + O2(g)
Calculate the equilibrium concentrations of all gases if 0.800 mol of CO2(g) is initially placed in a
2.00 L reaction container. (3 marks)
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8. What is the pH of a weak acid with [HA] = 0.125 mol/L and Ka = 5.4×10-7? (4 marks)
9. A buffer is created by adding 0.35 mol of sodium benzoate to 1.00 L of a 0.40 mol/L benzoic acid
solution. The Ka of benzoic acid is 6.3×10-5. Determine the pH of the buffer. (5 marks)
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10. 15.0 mL of 0.250 mol/L iron (II) chloride is mixed with 5.00 mL of 0.0030 mol/L sodium
hydroxide. Does a precipitate form? (Ksp=4.87×10−17) (4 marks)
11. For the following reaction, identify the species that is undergoing oxidation and the species that
is undergoing reduction: (2 marks)
12. Balance the following reaction in a basic solution: (4 marks)
2−
Zn + NO−
3 → Zn(OH)4 + NH3
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13. Draw the following galvanic cell including the flow of electrons, half cell reactions, and potential
difference: (4 marks)
𝐹𝑒𝑠 |𝐹𝑒(𝑁𝑂3 )2(𝑎𝑞) || 𝐶𝑢(𝑁𝑂3 )2(𝑎𝑞) |𝐶𝑢(𝑠)
14. Determine the shape of the following molecules and identify what intermolecular forces exist in
a pure sample of the compound. (3 marks each)
a. SO2−
3
b. BeF2
c. PF6−
15. Draw the short form electron configuration for Potassium. (1 mark)