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Byju's Answer
Standard X
Chemistry
Factors Affecting the Rate of a Chemical Reaction
For the react...
Question
For the reaction,
2
N
O
2
→
2
N
O
+
O
2
which of the following is false?
A
The decrease in
[
N
O
2
]
and the increase in [
O
2
] proceed at the same rate
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B
The rate of formation of
N
O
is twice the rate of formation of
O
2
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C
The average rates of increase in the concentration of
N
O
and
O
2
are expressed as
d
[
N
O
]
d
t
and
d
[
N
O
2
]
d
t
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D
d
[
N
O
]
d
t
=
2
×
d
[
O
2
]
d
t
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Solution
The correct option is
C
The decrease in
[
N
O
2
]
and the increase in [
O
2
] proceed at the same rate
The rate of reaction in terms of products and reactants:
R
ate
=
−
1
2
d
[
N
O
2
]
d
t
=
+
1
2
d
[
N
O
]
d
t
=
+
d
[
O
2
]
d
t
So, decrease in
[
N
O
2
]
is twice the increase in
[
O
2
]
. So, it does not proceed at same rate.
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Similar questions
Q.
In the formation of NO and
O
2
from
N
O
2
{
2
N
O
2
→
2
N
O
+
O
2
}
, the rate of production of
Q.
Nitrogen dioxide
(
N
O
2
)
dissociates into nitric oxide
(
N
O
)
and oxygen
(
O
2
)
as follows:
2
N
O
2
→
2
N
O
+
O
2
If the rate of decrease of concentration of
N
O
2
is
6.0
×
10
−
12
m
o
l
L
−
1
s
−
1
. What will be the rate of increase of concentration of
O
2
?
Q.
For the reaction
2
N
O
2
⟶
N
2
O
2
+
O
2
, rate expression is as follows;
−
d
[
N
O
2
]
d
t
=
k
[
N
O
2
]
n
, where
k
=
3
×
10
−
3
m
o
l
−
1
L
s
e
c
−
1
. If the rate of formation of oxygen is
1.5
×
10
−
4
m
o
l
L
−
1
s
e
c
−
1
, then the molar concentration of
N
O
2
in mole
L
−
1
is:
Q.
The rate of the reaction
2
N
2
O
5
→
4
N
O
2
+
O
2
can be written in three ways:
−
d
[
N
2
O
5
]
d
t
=
k
[
N
2
O
5
]
d
[
N
O
2
]
d
t
=
k
′
[
N
2
O
5
]
d
[
O
2
]
d
t
=
k
′′
[
N
2
O
5
]
The relationship between
k
and
k
′
are:
Q.
In the formation of
N
O
and
O
2
from
N
O
2
the rate of production of:
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