Answer:
Step I. Calculation of activation energy (Ea)
According to
Arrhenius equation
k = Ae?E
a /RT
log k = log 
The given eqn. is
.
On comparison:
Ea =
1.25 x 104 x 2.303 x 8.314 (J mol?1)
= 239,339 J mol?1
= 239.339 kJ mol?1.
Step II. Calculation of
desired temperature For first order reaction;
= 4.51 × 10?5
s?1
According to
Arrhenius theory.
log k = 14.34 ? 
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