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WorksheetsEquilibrium in Reversible Reactions
Total questions: 12
Worksheet time: 12mins
Name
Class
Date
1.
This symbol indicates that a reaction is ____________
a)
reversible
b)
irreversible
2.
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)
Chemical Constant
d)
Chemical Reaction
3.
At what time the reaction reached equilibrium?
a)
t1
b)
t2
c)
t3
d)
t4
4.
For the reaction...
SO2 + O2 <=> SO3
If the concentration of SO2 is increased, the equilibrium position of the reaction will shift ___________.
SO2 + O2 <=> SO3
If the concentration of SO2 is increased, the equilibrium position of the reaction will shift ___________.
a)
to the left
b)
to the right
c)
to the left and right
d)
neither left nor right
5.
For the reaction...
SO2 + O2 <=> SO3
If the equilibrium position shifts to the right, the concentration of O2 will ___________.
SO2 + O2 <=> SO3
If the equilibrium position shifts to the right, the concentration of O2 will ___________.
a)
increase
b)
decrease
c)
remain the same
d)
double
6.
For the reaction...
N2 + O2 <=> 2NO
If O2 is removed, the concentration of N2 will _______.
N2 + O2 <=> 2NO
If O2 is removed, the concentration of N2 will _______.
a)
increase
b)
decrease
c)
remain the same
d)
double
7.
For the reaction...
N2 (g) + 3 H2 (g) <=> 2 NH3 (g)
If the pressure in the system is increased, which substance(s) will increase in concentration?
N2 (g) + 3 H2 (g) <=> 2 NH3 (g)
If the pressure in the system is increased, which substance(s) will increase in concentration?
a)
N2 (as 2 mol gas → 4 mol gas)
b)
H2 (as 2 mol gas → 4 mol gas)
c)
N2 and H2 (as 2 mol gas → 4 mol gas)
d)
NH3 (as 4 mol gas → 2 mol gas)
8.
Fe3+ + SCN- ⇋ FeSCN2+
How do you shift the equilibrium to the right?
a)
By adding Fe3+
b)
By removing Fe3+
c)
Both
d)
Neither
9.
Fe3+ + SCN- ⇋ FeSCN2+
How do you shift the equilibrium to the right?
a)
By adding SCN-
b)
By removing SCN-
c)
Both
d)
Neither
10.
Fe3+ + SCN- ⇋ FeSCN2+
How do you shift the equilibrium to the left?
a)
By adding SCN-
b)
By removing SCN-
c)
Both
d)
Neither
11.
Fe3+ + SCN- ⇋ FeSCN2+
How do you shift the equilibrium to the left?
a)
By adding Fe3+
b)
By removing Fe3+
c)
Both
d)
Neither
12.
Fe3+ + SCN- ⇋ FeSCN2+
How do you shift the equilibrium to the right?
a)
By adding FeSCN2+
b)
By removing FeSCN2+
c)
Both
d)
Neither
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