Rate constant of a reaction at 1000k and 1060k are 0.01 and 0.60 respectively. Find the values of Ea,
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12th
Chemistry
Chemical Kinetics
Effect of Temperature and Catalyst on Rate of a Reaction
The rate constant of a reac...
CHEMISTRY
The rate constant of a reaction at 700 K and 760 K are 0.011M
−1
s
−1
, respectively. The values of Arrhenius parameter is:
December 20, 2019
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Elizabeth Mouni
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ANSWER
Substituting the value of K and T in Arrhenius equation:
k=Ae
−Ea/RT
log
k
1
k
2
=
2.3R
E
a
(
T
1
T
2
T
2
−T
1
)
log (
0.011M
−1
s
−1
0.105M
−1
s
−1
)=
2.3×8.314
E
a
×[
760×700
760−700
]
Solve for E
a
:
E
a
=166.351×10
3
Jmol
−1
=166.351kJmol
−1
Value of A can be determined
log k = log A −
2.3×8.314
166.35kJmol
−1
×
700k
1
Solve for log A and take antilog.
∴A=2.8×10
10
M
−1
s
−1
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