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WorksheetsLe Châtelier’s Principle
Total questions: 10
Worksheet time: 20mins
Name
Class
Date
1.
2SO2(g)+O2(g)⇌2SO3(g)
Removing O2(g) will
Removing O2(g) will
a)
shift equilibrium right
b)
shift equilibrium left
c)
decrease temperature
d)
have no change
2.
2SO2(g)+O2(g)⇌2SO3(g)
Adding SO2(g) will
Adding SO2(g) will
a)
shift equilibrium right
b)
shift equilibrium left
c)
increase rate of reaction
d)
have no change
3.
Changes in pressure will only affect substances that are in the __________ state.
a)
gaseous
b)
liquid
c)
solid
d)
plasma
4.
2SO2(g)+O2(g)⇌2SO3(g)
Decreasing volume of container will
Decreasing volume of container will
a)
shift equilibrium right
b)
shift equilibrium left
c)
change K
d)
have no change
5.
For the reaction...
heat + N2 + O2 ↔ 2NO
If the heat is added to the chemical system, the equilibrium will shift _______.
heat + N2 + O2 ↔ 2NO
If the heat is added to the chemical system, the equilibrium will shift _______.
a)
left
b)
right
c)
left and right
d)
neither left nor right
6.
For the following reaction: H2(g) + Cl2 (g) ↔ 2HCl(g), calculate the concentration of HCl when Keq= 2.3x10-5, [H2]= 0.0056mol, [Cl2]= 0.0048mol.
a)
6.2 x 10-10 M
b)
2.5 x 10-5 M
c)
1.1 M
d)
1.2 M
7.
For the reaction...
SO2 + O2 <−> SO3
If the equilibrium shifts to the right, the concentration of O2 will ___________.
SO2 + O2 <−> SO3
If the equilibrium shifts to the right, the concentration of O2 will ___________.
a)
increase
b)
decrease
c)
remain the same
d)
double
8.
Le Chatelier's Principle states that if a chemical system at equilibrium is stressed,
a)
the system will adjust to increase the stress
b)
the system will adjust to reduce the stress
c)
the system will not adjust
9.
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
10.
Which statement describe a system at equilibrium?
a)
Kforward = Kreverse
b)
Amount of reactant and product are equal
c)
When the reactant used up,the reaction stop.
d)
The rate of forward reaction equal the rate of reverse reaction
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