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Byju's Answer
Standard XII
Chemistry
Arrhenius Equation
What are the ...
Question
What are the dimensions of
A
in the expression
k
=
Ae
-
E
a
/
RT
?
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Solution
Arrhenius equation:
The Arrhenius equation can be expressed as
k
=
Ae
-
E
a
/
RT
.
Where
k
is the rate of reaction,
E
a
is the activation energy,
T
is the temperature and
R
is the gas constant.
'
A
'
in Arrhenius equation represents the Arrhenius constant which is the number of collisions per unit of time.
The dimension of the Arrhenius equation is collisions per unit which is expressed in
s
-
1
.
This equation is used to define the relationship between the rate of reaction with temperature and the pre-exponential factor i.e.
A
.
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A
s
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