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WorksheetsEquilibrium
Total questions: 18
Worksheet time: 16mins
Name
Class
Date
1.
For the reaction...
SO2 + O2 ↔ SO3
If the concentration of SO2 is increased, the equilibrium of the reaction will shift ___________.↔
SO2 + O2 ↔ SO3
If the concentration of SO2 is increased, the equilibrium of the reaction will shift ___________.↔
a)
left
b)
right
c)
left and right
d)
neither left nor right
2.
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
3.
For the reaction...
SO2 + O2 ↔ SO3
If the equilibrium shifts to the right, the concentration of SO3 will ___________.
SO2 + O2 ↔ SO3
If the equilibrium shifts to the right, the concentration of SO3 will ___________.
a)
increase
b)
decrease
c)
remain the same
d)
double
4.
For the reaction...
SO2 + O2 ↔ SO3
If the concentration of O2 is decreased, the equilibrium of the reaction will shift ___________.
SO2 + O2 ↔ SO3
If the concentration of O2 is decreased, the equilibrium of the reaction will shift ___________.
a)
left
b)
right
c)
left and right
d)
neither left nor right
5.
For the reaction...
heat + N2 + O2 ↔ 2NO
If O2 is removed, the concentration of N2 will _______.
heat + N2 + O2 ↔ 2NO
If O2 is removed, the concentration of N2 will _______.
a)
increase
b)
decrease
c)
remain the same
d)
double
6.
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
7.
For the reaction...
heat + N2 + O2 ↔ 2NO
If the heat is removed to the chemical system, the equilibrium will shift _______.
heat + N2 + O2 ↔ 2NO
If the heat is removed to the chemical system, the equilibrium will shift _______.
a)
left
b)
right
c)
both left and right
d)
neither left nor right
8.
For the reaction...
H2 (g) + Cl2 (g) ↔ 2HCl (g) + heat
If the temperature is cooled, the _________ reaction will be favored.
H2 (g) + Cl2 (g) ↔ 2HCl (g) + heat
If the temperature is cooled, the _________ reaction will be favored.
a)
forward
b)
reverse
c)
forward and reverse
9.
For the reaction...
N2 (g) + 3 H2 (g) ↔ 2 NH3 (g)
If the pressure in the system is increased, _______ reaction will be favored.
N2 (g) + 3 H2 (g) ↔ 2 NH3 (g)
If the pressure in the system is increased, _______ reaction will be favored.
a)
the forward
b)
the reverse
c)
neither
10.
Define chemical equilibrium.
a)
A reaction is reversible.
b)
The concentration of the reactants is equal to the concentration of the products.
c)
The rate of a forward reaction is equal to the rate of the reverse reaction.
d)
The reaction stops and no further change in concentration occurs.
11.
What is [H2O] if K = 1.2,
[CO2] = 0.846M, & [CH4]= 0.0713M?
4CuO(s)+CH4(g)↔CO2(g)+4Cu(s) +2H2O(g)
[CO2] = 0.846M, & [CH4]= 0.0713M?
4CuO(s)+CH4(g)↔CO2(g)+4Cu(s) +2H2O(g)
a)
0.101 M
b)
0.318 M
c)
0.0102 M
d)
3.77 M
12.
When K is large,
a)
There are more products than reactants when the reaction reached equilibrium.
b)
There are more reactant than products when the reaction reached equilibrium.
c)
The amount of reactants is equal to the amount of products.
13.
What type of reaction can obtain equilibrium?
a)
Double Replacement
b)
Fast Reactions
c)
Reactions with low activation energy
d)
Reversible Reactions
14.
Le Chaltelier'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
15.
Consider the following reaction :
SO2 (g) + NO2 (g) ↔ SO3 (g) + NO (g)
had reached a state of equilibrium, was found to contain 0.40 M SO3 , 0.30 M NO, 0.15 M NO2 , and 0.20 M SO2. Calculate the equilibrium constant for this reaction.
SO2 (g) + NO2 (g) ↔ SO3 (g) + NO (g)
had reached a state of equilibrium, was found to contain 0.40 M SO3 , 0.30 M NO, 0.15 M NO2 , and 0.20 M SO2. Calculate the equilibrium constant for this reaction.
a)
4
b)
.42
c)
.25
d)
1
16.
Consider the following reaction. What would be the equilibrium constant expression?
4Br2(g) + CH4(g) ↔ 4HBr(g) + CBr4(g)
4Br2(g) + CH4(g) ↔ 4HBr(g) + CBr4(g)
a)
[Br2]4 [CH4]/ [HBr]4 [CBr4]
b)
[HBr]4 [CBr4]/ [Br2]4 [CH4]
c)
[HBr ]/ [Br2]4 [CH4]
d)
[HBr]4 [CBr4]/ [Br2]4 [CH]4
17.
What is the proper K for the following reaction?
2 NO(g) + O2(g) ↔ 2 NO2(g)
2 NO(g) + O2(g) ↔ 2 NO2(g)
a)
K = [NO2]2 / [NO]2[O2]
b)
K = [NO]2[O2] / [NO2]2
c)
K = [NO]2[O2][NO2]2
d)
K = 2[NO][O2] / 2[NO2]
18.
What is the correct equilibrium expression for the following reaction:
2H2O2(aq) ↔ 2H2O(l) + O2(g)
2H2O2(aq) ↔ 2H2O(l) + O2(g)
a)
[H2O]2[O2] / [H2O2]2
b)
[H2O2]2 / [H2O]2[O2]
c)
[O2] / [H2O2]2
d)
[H2O]2 / [H2O2]2
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