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Question

For a firt order reaction AP, the temperature (T) dependent rate constant (k) was found to follow the equation logk=(2000)1T+6.0. The pre-exponential factor A and the activation energy Ea, respectively, are?

A
1.0×106s1 and 9.2kJ mol1
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B
6.01 and 16.6kJ mol1
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C
1.0×106s1 and 16.6kJ mol1
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D
1.0×106s1 and 38.3kJ mol1
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Solution

The correct option is D 1.0×106s1 and 38.3kJ mol1
log k=2000T+6.0
Multiply by 2.303
ln k1×106=4606T
k=1×106 e38.3×103RT
A=1×106 s1 and
Ea=38.3 kJ mol1

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