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Byju's Answer
Standard XII
Chemistry
Rate of Reaction
Write the rat...
Question
Write the rate law for
- Reaction is second order in
N
O
(
g
)
and first order in
B
r
2
(
g
)
.
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Solution
The rate of reaction:
r
a
t
e
=
k
[
N
O
]
x
[
B
r
2
]
y
Since it is first order in
B
r
2
and second order in
N
O
R
a
t
e
=
k
[
N
O
]
2
[
B
r
2
]
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0
Similar questions
Q.
Write the rate law for -Reaction is zero order in A and second order in B.
Q.
What is order of reaction? Write unit of rate constant
K
for the zero order, first order and second order reaction.
Q.
A two-step mechanism has been suggested for the reaction of nitric oxide and bromine:
N
O
(
g
)
+
B
r
2
(
g
)
k
1
−
→
N
O
B
r
2
(
g
)
N
O
B
r
2
(
g
)
+
N
O
(
g
)
k
2
−
→
2
N
O
B
r
(
g
)
Observed rate law is, rate
=
k
[
N
O
]
2
[
B
r
2
]
:
Hence, rate determining step is
Q.
The following mechanism has been proposed for the reaction of
N
O
with
B
r
2
to form
N
O
B
r
.
N
O
(
g
)
+
B
r
2
(
g
)
f
a
s
t
⇌
N
O
B
r
2
(
g
)
N
O
B
r
2
(
g
)
+
N
O
(
g
)
s
l
o
w
⇌
2
N
O
B
r
(
g
)
.
If the second step is the rate determining step, the order of the reaction with respect to
N
O
(
g
)
is:
Q.
Write the units of rate constants for zero order and first order reactions.
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