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Byju's Answer
Standard XII
Chemistry
Order of Reaction
For a certain...
Question
For a certain reaction the expression for half life is
t
∝
1
a
n
−
1
then the order of reaction is:
A
n
−
1
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B
n
+
1
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C
n
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D
n
−
2
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Solution
The correct option is
D
n
The Expression for Half life is
t
α
1
a
n
−
1
. Then the order of the reaction is
n
So Option C is correct
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0
Similar questions
Q.
The order of reaction is an experimentally determined quantity. It may be zero, positive, negative, or fractional. The kinetic equation of b
n
th order reaction is
k
×
t
=
1
n
−
1
[
1
(
a
−
x
)
n
−
1
−
1
a
n
−
1
]
Half life of
n
th order reaction depends on the initial concentration according to the following relation :
Unit of
k
=
[
1
C
o
n
e
]
n
−
1
×
T
i
m
e
−
1
The differential rate law for
n
th order reaction may be given as :
d
x
d
t
=
k
[
A
]
n
where A denotes the reactant.
The unit of rate and rate constant are same for:
Q.
The unit of rate constant for a given reaction is
M
1
−
n
L
n
−
1
t
−
1
where n is order of reaction.
Q.
For a certain reaction of order ‘n’, the half-life
⎛
⎜
⎝
t
1
2
⎞
⎟
⎠
is given by,
t
1
2
=
2
−
√
2
k
×
C
1
2
0
, where k is a constant and
C
0
is the initial concentration. Find 'n'.
Q.
For a certain reaction of order ‘n’, the half-life
⎛
⎜
⎝
t
1
2
⎞
⎟
⎠
is given by,
t
1
2
=
2
−
√
2
k
×
C
1
2
0
, where k is a constant and
C
0
is the initial concentration. Find 'n'.
Q.
For
n
th order reaction
t
1
/
2
t
3
/
4
depends on
(
n
≠
1
)
:
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