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Worksheetschemistery
Total questions: 10
Worksheet time: 20mins
Name
Class
Date
1.
N2O4(g) ↔ 2 NO2(g)
What is the concentration equilibrium constant expression?
What is the concentration equilibrium constant expression?
a)
Kc = [NO2]2/[N2O4]
b)
Kc = [N2O4]/[NO2]2
c)
Kc = [N2O4]2/[NO2]
d)
Kc = [NO2]/[N2O4]2
2.
What is the equilibrium-constant expression for
CO2(g) + H2(g) ↔ CO(g) + H2O(l)
CO2(g) + H2(g) ↔ CO(g) + H2O(l)
a)
Kc= [CO][H2O] / [CO2][H2]
b)
Kc= [CO2][H2] / [CO]
c)
Kc= [CO2][H2] / [CO][H2O]
d)
Kc= [CO] / [CO2][H2]
3.
This symbol indicates that a reaction is ____________
a)
reversible
b)
irreversible
4.
Which is the reactant - and why?
a)
A, as concentration decreases
b)
B, as concentration decreases
c)
A, as concentration increases
d)
B, as concentration increases
5.
At what time the reaction reached equilibrium?
a)
t1
b)
t2
c)
t3
d)
t4
6.
When the rate of the forward reaction is equal to the rate of backward reaction, the system is said to be in
a)
Chemical Equilibrium
b)
Chemical Balance
c)
Stoichiometry
d)
Chemical Reaction
7.
The following factors affect the position of equilibrium EXCEPT
a)
Concentration
b)
Pressure
c)
Temperature
d)
States of matter
8.
2SO2(g)+O2(g) ⇌ 2SO3(g) + Heat
Adding SO2(g) will
a)
shift equilibrium right
b)
shift equilibrium left
c)
increase rate of reaction
d)
have no change
9.
2SO2(g)+O2(g) ⇌ 2SO3(g) + Heat
Increasing the temperature will...
a)
shift equilibrium right
b)
shift equilibrium left
c)
increase pressure
d)
have no change
10.
2SO2(g) + O2(g) ⇌ 2SO3(g) + Heat
Removing O2(g) will
a)
shift equilibrium right
b)
shift equilibrium left
c)
increase pressure
d)
have no change
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