AP Chemistry Final Exam Practice
Questions With Complete Solutions
Which of the following diatomic species has a bond order of 2?
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Li2
B2
N2
O2
F2 - CORRECT ANSWER✔✔-O2 (O2 has a double bond)
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Which of the following has the largest bond dissociation energy?
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Li2
B2
N2
O2
F2 - CORRECT ANSWER✔✔-N2 (because N2 has a triple bond, making it have the
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largest bond dissociation energy)
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The geometry of the SO3 molecule is best described as - CORRECT ANSWER✔✔-
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trigonal planar |
In which of the following process are covalent bonds broken?
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, I2(s) → I2(g)
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CO2(s) → CO2(g) | |
NaCl(s) → NaCl(l) | |
C(diamond) → C(g) | |
Fe(s) → Fe(l) - CORRECT ANSWER✔✔-C(diamond) → C(g)
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Nitramide, N2H2O2, decomposes slowly in aqueous solution. This decomposition
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is believed to occur according to the reaction mechanism above. What is the rate
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law? - CORRECT ANSWER✔✔-k[N2H2O2]/[H+]
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Which is a precipitation reaction?
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(A) H2SeO4(aq) + 2 Cl-(aq) + 2 H+(aq) → H2SeO3(aq) + Cl2(g) + H2O(l)
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(B) S8(s) + 8 O2(g) → 8 SO2(g)
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(C) 3 Br2(aq) + 6 OH-(aq) → 5 Br-(aq) + BrO3-(aq) + 3 H2O(l)
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(D) Ca2+(aq) + SO42-(aq) → CaSO4(s)
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(E) PtCl4(s) + 2 Cl-(aq) → PtCl62-(aq) - CORRECT ANSWER✔✔-Ca2+(aq) + SO42-
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(aq) → CaSO4(s)
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A reaction was observed for 20 days and the percentage of the reactant
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remaining after each day was recorded in the table above. Which of the following
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best describes the order and the half-life of the reaction?
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0 days- 100% left; 3 days-50%; 6 days-25% - CORRECT ANSWER✔✔-Reaction
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order: First Half-life: 3
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Questions With Complete Solutions
Which of the following diatomic species has a bond order of 2?
| | | | | | | | | | |
Li2
B2
N2
O2
F2 - CORRECT ANSWER✔✔-O2 (O2 has a double bond)
| | | | | | | |
Which of the following has the largest bond dissociation energy?
| | | | | | | | |
Li2
B2
N2
O2
F2 - CORRECT ANSWER✔✔-N2 (because N2 has a triple bond, making it have the
| | | | | | | | | | | | | |
largest bond dissociation energy)
| | |
The geometry of the SO3 molecule is best described as - CORRECT ANSWER✔✔-
| | | | | | | | | | | |
trigonal planar |
In which of the following process are covalent bonds broken?
| | | | | | | | |
, I2(s) → I2(g)
| |
CO2(s) → CO2(g) | |
NaCl(s) → NaCl(l) | |
C(diamond) → C(g) | |
Fe(s) → Fe(l) - CORRECT ANSWER✔✔-C(diamond) → C(g)
| | | | | | |
Nitramide, N2H2O2, decomposes slowly in aqueous solution. This decomposition
| | | | | | | | |
is believed to occur according to the reaction mechanism above. What is the rate
| | | | | | | | | | | | | |
law? - CORRECT ANSWER✔✔-k[N2H2O2]/[H+]
| | |
Which is a precipitation reaction?
| | | |
(A) H2SeO4(aq) + 2 Cl-(aq) + 2 H+(aq) → H2SeO3(aq) + Cl2(g) + H2O(l)
| | | | | | | | | | | | |
(B) S8(s) + 8 O2(g) → 8 SO2(g)
| | | | | | |
(C) 3 Br2(aq) + 6 OH-(aq) → 5 Br-(aq) + BrO3-(aq) + 3 H2O(l)
| | | | | | | | | | | | |
(D) Ca2+(aq) + SO42-(aq) → CaSO4(s)
| | | | |
(E) PtCl4(s) + 2 Cl-(aq) → PtCl62-(aq) - CORRECT ANSWER✔✔-Ca2+(aq) + SO42-
| | | | | | | | | | |
(aq) → CaSO4(s)
| |
A reaction was observed for 20 days and the percentage of the reactant
| | | | | | | | | | | | |
remaining after each day was recorded in the table above. Which of the following
| | | | | | | | | | | | |
best describes the order and the half-life of the reaction?
| | | | | | | | | |
0 days- 100% left; 3 days-50%; 6 days-25% - CORRECT ANSWER✔✔-Reaction
| | | | | | | | | | |
order: First Half-life: 3
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