AP Chem Final Exam
Quiz
•
Chemistry
•
12th Grade
•
Hard
Pete Bach
Used 5+ times
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32 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
__ Fe(OH)2 (s) + __ H3PO4 (aq) → __ Fe3 (PO4)2 (s) + __ H2O(l)
After the above chemical equation is balanced, the lowest whole-number coefficient for water is:
3
1
9
6
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of the following best represents the balanced net ionic equation for the reaction of lead(II) carbonate with concentrated hydrochloric acid? In this reaction, all lead compounds are insoluble.
Pb2CO3 + 2H+ + Cl− → Pb2Cl + CO2 + H2O
PbCO3 + 2H+ + 2Cl− → PbCl2 + CO2 + H2O
PbCO3 + 2H+ → Pb2+ + CO2 + H2O
PbCO3 + 2Cl− → PbCl2 + CO3 2−
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
When 50.0 mL of 1.0 M AgNO3 is added to 50.0 mL of 0.50 M HCl, a precipitate of AgCl forms. After the reaction is complete, what is the concentration of silver ions in the solution?
0.50 M
0.0 M
1.0 M
0.25 M
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
For which of the following substances is the formula mass the same for both the empirical and molecular formulas?
H2C2O4
C6H12O6
CO2
H2O2
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2CH4 (g) + O2 (g) <--> 2CO(g) + 4H2 (g) ... ΔH < 0
To increase the value of the equilibrium constant, K, in the above equation, which of the following changes must be made?
increase the temperature
increase the volume
decrease the temperature
add CO(g)
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
2NO2 (g) ↔ 2NO(g) + O2 (g)
The above materials were sealed in a flask and allowed to come to equilibrium at a certain temperature. A small quantity of O2 (g) was added to the flask, and the mixture was allowed to return to equilibrium at the same temperature. Which of the following has increased over its original equilibrium value?
the quantity of NO2 (g) present
the quantity of NO(g) present
the equilibrium constant, K, increases
the rate of the reaction
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which of the following best represents the balanced net ionic equation for the reaction of silver carbonate with concentrated hydrochloric acid? Silver ions have a 1+ charge. In this reaction, all silver compounds are insoluble
2AgCO3 + 4H+ + Cl− → Ag2Cl + 2CO2 + 2H2O
Ag2CO3 + 2H+ + 2Cl− → 2AgCl + CO2 + H2O
AgCO3 + 2H+ → Ag+ + CO2 + H2O
AgCO3 + 2H+ → Ag+ + CO2 + H2O
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