chemical Equilibrium
Authored by Sergey Zalevskiy
Science
11th Grade
NGSS covered
Used 2+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the Keq expression for this reaction?
2 NO(g) + O2(g) ⇌ 2 NO2(g)
Keq = [NO2]2 / [NO]2 [O2]
Keq = [NO]2 [O2] / [NO2]2
Keq = [NO]2 [O2] [NO2]2
Keq = [NO2]2 / [NO]2 + [O2]
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
What is the equilibrium expression for this reaction?
Fe3O4(s) + 4H2(g) <=> 3Fe(s) + 4H2O(g)
[Fe]3 [H2O]4 / [Fe3O4] [H2]4
[Fe3O4] [H2]4 / [Fe]3 [H2O]4
[H2O]4 / [H2]4
[Fe] [H2O] / [Fe3O4] [H2]
Tags
NGSS.HS-PS1-6
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
When K is very large,
There are more products than reactants when the reaction reached equilibrium.
There are more reactants than products when the reaction reached equilibrium.
The amount of reactants is equal to the amount of products.
Tags
NGSS.HS-PS1-6
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Consider the following reaction at equilibrium:
SO2 (g) + NO2 (g) ↔ SO3 (g) + NO (g)
The concentrations of reactants and products are found to be 0.40 M SO3 , 0.30 M NO, 0.15 M NO2 , and 0.20 M SO2. Calculate the equilibrium constant for this reaction.
4
.42
.25
1
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
At 298 Kelvin, the Keq for the following reaction is 4.3 x 10-4 , [NO2-] = 0.043 M, and [H3O+] = 0.043 M
HNO2(aq) + H2O(l) ↔ H3O+(aq) + NO2-(aq)
Calculate the concentration of HNO2
0.23 M
4.3 M
100 M
0.01 M
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2SO2(g)+O2(g)⇌2SO3(g)
Removing O2(g) will
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
2SO2(g)+O2(g)⇌2SO3(g)
Increasing the volume of container will
shift equilibrium right
shift equilibrium left
change K
have no change
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