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Byju's Answer
Standard XII
Chemistry
Rate of Reaction
For the react...
Question
For the reaction in equilibrium,
N
2
O
4
(
g
)
⇌
2
N
O
2
(
g
)
The concentrations of
N
2
O
4
and
N
O
2
at equilibrium are
4.8
×
10
−
2
and
1.2
×
10
−
2
m
o
l
L
−
1
respectively. The value of
K
c
for this reaction is:
A
3
×
10
−
3
m
o
l
L
−
1
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B
3
×
10
3
m
o
l
L
−
1
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C
3.3
×
10
2
m
o
l
L
−
1
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D
3
×
10
−
1
m
o
l
L
−
1
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Solution
The correct option is
A
3
×
10
−
3
m
o
l
L
−
1
N
2
O
4
(
g
)
⇌
2
N
O
2
(
g
)
K
c
=
[
N
O
2
]
2
[
N
2
O
4
]
=
[
1.2
×
10
−
2
]
2
4.8
×
10
−
2
=
3
×
10
−
3
m
o
l
L
−
1
Hence, option A is correct.
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Similar questions
Q.
For the reaction equilibrium
N
2
O
4
⇌
2
N
O
2
(
g
)
, the concentrations of
N
2
O
4
and
N
O
2
at equilibrium are
4.8
×
10
−
2
and
1.2
×
10
−
2
m
o
l
l
i
t
r
e
−
1
respectively. The value of
K
c
for the reaction is:
Q.
For a reaction equilibrium,
N
2
O
4
(
g
)
⇌
2
N
O
2
(
g
)
, the concentrations of
N
2
O
4
and
N
O
2
at equilibrium are
4.8
×
10
−
2
and
1.2
×
10
−
2
m
o
l
/
L
respectively. The value of
K
c
, for the reaction is:
Q.
For the reaction at equilibrium:
N
2
O
4
(
g
)
⇌
2
N
O
2
(
g
)
,
the concentration of
N
2
O
4
and
N
O
2
at equilibrium are
4.8
×
10
−
2
and
1.2
×
10
−
2
mol/L respectively. The value of
K
c
for the reaction is:
Q.
P
C
l
5
,
P
C
l
3
a
n
d
C
l
2
are at equilibrium at
500
K in a closed container and their concentrations are
0.8
×
10
−
3
m
o
l
L
−
1
,
1.2
×
10
−
3
m
o
l
L
−
1
and
1.2
×
10
−
3
m
o
l
L
−
1
respectively.
The value of
K
c
for the reaction:
P
C
l
5
(
g
)
⇌
P
C
l
3
(
g
)
+
C
l
2
(
g
)
will be:
Q.
For the reaction at equilbrium:
N
2
O
4
(g)
⇌
2
N
O
2
(g)
, the concentration of
N
2
O
4
and
N
O
2
at equilibrium are
4.8
×
10
−
2
and
1.2
×
10
−
2
mol/L
respectively. The value of
K
c
for the reaction is:
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