Chemistry 12 .

Marey academy for math and science
SCH 4U1 – Final Exam
Student Name————-
PART A MULTIPLE CHOICE (KNOWLEDGE – 3O)
Identify the letter of the choice that best completes the statement or answers the
question.
3.
Which of the following is the electron configuration for neon?
a. 1s22s22p43s2
b. 1s12s12p63s2
c. 1s22s22p6
4.
Iron forms a common ion with a charge of +3.
ion is:
a. 1s22s22p63s23p63d5
b. 1s22s22p63s23p63d9
c. 1s22s22p63s23p64s23d8
5.
d. 1s32s32p4
e. 1s22s22p8
The electron configuration of this
d. 1s22s22p63s23p63d6
e. 1s22s22p63s23p64s23d3
Which of the following is true of orbitals?
a. They are two-dimensional paths around the nucleus.
b. They can contain maximum of two electrons.
SCH 4U – Final Exam
c. Their shapes are predicted by Bohr’s equation.
d. all of the above
e. none of the above
6.
Which of the following is the electron configuration for the fluoride ion, F─?
a. 1s22s22p4
b. 1s21p6
c. 1s22s22p5
7.
In bonding orbital theory, a carbon-carbon triple bond consists of
a. 3 pi bonds
b. 1 sigma bond + 2 pi bonds
c. 2 sigma bond + 3 pi bonds
8.
d. linearly
e. trigonally
The attractive forces that exist between atoms in liquid helium are known as
a. dipole-dipole forces
b. ion-dipole forces
c. covalent bonds
11.
d. molecular crystal
e. frozen gas
Four pairs of covalently-bonded electrons surrounding a central atom will be
arranged
a. pyramidally
b. spherically
c. tetrahedrally
10.
d. 1 sigma bonds + 4 pi bonds
e. 3 sigma bonds
A substance is a brittle crystal that conducts electricity in molten liquid state only.
Which type of substance is it?
a. metallic crystal
b. ionic crystal
c. covalent crystal
9.
d. 1s22s22p6
e. 1s22s22p63s1
d. hydrogen bonds
e. Van der Waals forces
Which of these intermolecular forces exist in between water, H2O, molecules:
I.
Van der Waals
II.
metallic bonding
III.
hydrogen bonding
SCH 4U – Final Exam
IV.
covalent bonding
a. I only
b. I and IV only
c. I and III only
12.
The molar heat of vaporization of water is 42 kJ/mol. How much energy is released
by the condensation of 3.0 g of water?
a. 0.88 kJ
b. 7.0 kJ
c. 130 kJ
13.
d. I, III and IV only
e. I, II and III only
d. 250 kJ
e. 0.07 kJ
When solid ammonium chloride, NH4Cl, is added to water, the temperature of the
solution decreases. Which statement best describes this observation?
a. The reaction is exothermic
b. Heat is released from the system, so it feels cooler.
c. NH4Cl(s) ! NH4Cl(aq) + 33.6 kJ
d. NH4Cl(s) ! NH4Cl(aq)”#$”%”&”()”*+”
e. NH4Cl(s) + H2O(l) ! NH4Cl(aq)”#,”%”-“”()”*+
14.
The presence of a catalyst is thought to increase the rate of a reaction by
a. changing the products that are formed in the reaction
b. decreasing the enthalpy change of the reaction
c. increasing the enthalpy change of the reaction
d. decreasing the activation energy of the reaction
e. increasing the activation energy of the reaction
15.
In a saturated solution of lead(II) chloride, the concentration of chloride ion is
6.2 x 10-4 mol/L. The Ksp of lead(II) chloride would be which of the following?
a. 1.9 x 10-7
b. 6.0 x 10-11
c. 1.2 x 10-10
d. 2.3 x 10-17
e. none of the above
SCH 4U – Final Exam
16.
The following diagram represents a kinetic energy distribution at two temperatures.
In comparing the two temperatures, it is obvious that
a.
b.
c.
d.
e. cannot be determined
17.
A full syringe contains this equilibrium:
2 NO2(g)
⇌
N2O4(g)
brown gas
colourless gas
Based on Le Chatelier’s principle, what would be observed when the syringe is used
to compress this gas mixture?
a. the mixture gets darker
d. the mixture gets lighter
b. the mixture gets darker then
e. none of the above
lighter
c. the mixture get lighter then darker
18.
The pH of a solution of HCl was found to be 3.4. The concentration of HCl of this
solution (in mol/L) is which of the following?
a. 4.0 x 10-4
b. 3.4
c. 0.29
19.
d. 2.5 x 10-11
e. 2.0 x 10-4
The organic compound aniline (C6H5NH2) acts as weak base.
formula of aniline’s conjugate acid?
a. C6H5COOH
b. C6H5NH─
c. H3O+
d. OH─
e. C6H5NH3+
What is the chemical
SCH 4U – Final Exam
20.
Bronsted-Lowry defined a base as
a. a substance that releases H+
b. a substance that releases OH─
c. a proton donor
21.
The oxidation number of chromium (Cr) in the dichromate ion (Cr2O72─) is
a. +2
b. +4
c. +6
23.
d. a proton acceptor
e. an electron pair acceptor
d. +7
e.
Which substance in the following reaction has undergone reduction?
MnO4─(aq) + 5 C2O42─(aq) + 16H+(aq)
d. Mn2+
e. CO2
a. MnO4─
b. C2O42─
c. H+
24.
2Mn2+(aq) + 10CO2(g) + 8H2O(l)
Given the following half-cell reactions:
Fe2+(aq) + 2e─
Fe (s)
Cr3+(aq) + 3e─ → Cr (s)
Eo = ─0.44 V
E0 = ─0.74 V
At 25oC, the initial cell voltage of the cell shown in the diagram above is
a.
b.
c.
1.18 V
0.30 V
1.18 V
d.
e.
0.30 V
1.34 V
SCH 4U – Final Exam
25.
The compound above is classified as a(n)
a. alcohol
b. carboxylic acid
c. aldehyde
26.
d. ketone
e. alkene
What is the correct name for the above compound?
a. 2-methyl-3-butanol
b. 2-pentanal
c. 1,2-dimethylpropanol
d. 3-methyl-2-butanal
e. 3-methyl-2-butanol
27.
The two substances shown above would best be described as:
a. different compounds
b. structural isomers
c. geometric isomers
28.
d. aliphatic hydrocarbons
e. aromatic hydrocarbons
The formula for methyl ethanoate is which of the following?
a.
c.
b.
d.
Marey academy for math and science
SCH 4U1 – Final Exam
Student Name————-
PART A MULTIPLE CHOICE (KNOWLEDGE – 3O)
Identify the letter of the choice that best completes the statement or answers the
question.
3.
Which of the following is the electron configuration for neon?
a. 1s22s22p43s2
b. 1s12s12p63s2
c. 1s22s22p6
4.
Iron forms a common ion with a charge of +3.
ion is:
a. 1s22s22p63s23p63d5
b. 1s22s22p63s23p63d9
c. 1s22s22p63s23p64s23d8
5.
d. 1s32s32p4
e. 1s22s22p8
The electron configuration of this
d. 1s22s22p63s23p63d6
e. 1s22s22p63s23p64s23d3
Which of the following is true of orbitals?
a. They are two-dimensional paths around the nucleus.
b. They can contain maximum of two electrons.
SCH 4U – Final Exam
c. Their shapes are predicted by Bohr’s equation.
d. all of the above
e. none of the above
6.
Which of the following is the electron configuration for the fluoride ion, F─?
a. 1s22s22p4
b. 1s21p6
c. 1s22s22p5
7.
In bonding orbital theory, a carbon-carbon triple bond consists of
a. 3 pi bonds
b. 1 sigma bond + 2 pi bonds
c. 2 sigma bond + 3 pi bonds
8.
d. linearly
e. trigonally
The attractive forces that exist between atoms in liquid helium are known as
a. dipole-dipole forces
b. ion-dipole forces
c. covalent bonds
11.
d. molecular crystal
e. frozen gas
Four pairs of covalently-bonded electrons surrounding a central atom will be
arranged
a. pyramidally
b. spherically
c. tetrahedrally
10.
d. 1 sigma bonds + 4 pi bonds
e. 3 sigma bonds
A substance is a brittle crystal that conducts electricity in molten liquid state only.
Which type of substance is it?
a. metallic crystal
b. ionic crystal
c. covalent crystal
9.
d. 1s22s22p6
e. 1s22s22p63s1
d. hydrogen bonds
e. Van der Waals forces
Which of these intermolecular forces exist in between water, H2O, molecules:
I.
Van der Waals
II.
metallic bonding
III.
hydrogen bonding
SCH 4U – Final Exam
IV.
covalent bonding
a. I only
b. I and IV only
c. I and III only
12.
The molar heat of vaporization of water is 42 kJ/mol. How much energy is released
by the condensation of 3.0 g of water?
a. 0.88 kJ
b. 7.0 kJ
c. 130 kJ
13.
d. I, III and IV only
e. I, II and III only
d. 250 kJ
e. 0.07 kJ
When solid ammonium chloride, NH4Cl, is added to water, the temperature of the
solution decreases. Which statement best describes this observation?
a. The reaction is exothermic
b. Heat is released from the system, so it feels cooler.
c. NH4Cl(s) ! NH4Cl(aq) + 33.6 kJ
d. NH4Cl(s) ! NH4Cl(aq)”#$”%”&”()”*+”
e. NH4Cl(s) + H2O(l) ! NH4Cl(aq)”#,”%”-“”()”*+
14.
The presence of a catalyst is thought to increase the rate of a reaction by
a. changing the products that are formed in the reaction
b. decreasing the enthalpy change of the reaction
c. increasing the enthalpy change of the reaction
d. decreasing the activation energy of the reaction
e. increasing the activation energy of the reaction
15.
In a saturated solution of lead(II) chloride, the concentration of chloride ion is
6.2 x 10-4 mol/L. The Ksp of lead(II) chloride would be which of the following?
a. 1.9 x 10-7
b. 6.0 x 10-11
c. 1.2 x 10-10
d. 2.3 x 10-17
e. none of the above
SCH 4U – Final Exam
16.
The following diagram represents a kinetic energy distribution at two temperatures.
In comparing the two temperatures, it is obvious that
a.
b.
c.
d.
e. cannot be determined
17.
A full syringe contains this equilibrium:
2 NO2(g)
⇌
N2O4(g)
brown gas
colourless gas
Based on Le Chatelier’s principle, what would be observed when the syringe is used
to compress this gas mixture?
a. the mixture gets darker
d. the mixture gets lighter
b. the mixture gets darker then
e. none of the above
lighter
c. the mixture get lighter then darker
18.
The pH of a solution of HCl was found to be 3.4. The concentration of HCl of this
solution (in mol/L) is which of the following?
a. 4.0 x 10-4
b. 3.4
c. 0.29
19.
d. 2.5 x 10-11
e. 2.0 x 10-4
The organic compound aniline (C6H5NH2) acts as weak base.
formula of aniline’s conjugate acid?
a. C6H5COOH
b. C6H5NH─
c. H3O+
d. OH─
e. C6H5NH3+
What is the chemical
SCH 4U – Final Exam
20.
Bronsted-Lowry defined a base as
a. a substance that releases H+
b. a substance that releases OH─
c. a proton donor
21.
The oxidation number of chromium (Cr) in the dichromate ion (Cr2O72─) is
a. +2
b. +4
c. +6
23.
d. a proton acceptor
e. an electron pair acceptor
d. +7
e.
Which substance in the following reaction has undergone reduction?
MnO4─(aq) + 5 C2O42─(aq) + 16H+(aq)
d. Mn2+
e. CO2
a. MnO4─
b. C2O42─
c. H+
24.
2Mn2+(aq) + 10CO2(g) + 8H2O(l)
Given the following half-cell reactions:
Fe2+(aq) + 2e─
Fe (s)
Cr3+(aq) + 3e─ → Cr (s)
Eo = ─0.44 V
E0 = ─0.74 V
At 25oC, the initial cell voltage of the cell shown in the diagram above is
a.
b.
c.
1.18 V
0.30 V
1.18 V
d.
e.
0.30 V
1.34 V
SCH 4U – Final Exam
25.
The compound above is classified as a(n)
a. alcohol
b. carboxylic acid
c. aldehyde
26.
d. ketone
e. alkene
What is the correct name for the above compound?
a. 2-methyl-3-butanol
b. 2-pentanal
c. 1,2-dimethylpropanol
d. 3-methyl-2-butanal
e. 3-methyl-2-butanol
27.
The two substances shown above would best be described as:
a. different compounds
b. structural isomers
c. geometric isomers
28.
d. aliphatic hydrocarbons
e. aromatic hydrocarbons
The formula for methyl ethanoate is which of the following?
a.
c.
b.
d.