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Apply the Arrhenius equation which is:
`ln k = -E_a/RT + lnA`
where `k` - rate constant of reaction
`E_a` - energy of activation
`R` - gas constant, 8.314 J/(mol K)
`T` - temperature in Kelvin and
`A` - pre-exponential factor or frequency factor or Arrhenius factor.
So, substitute `k = 6xx10^5 s^(-1)` , `E_a = 40 000` `J/(mol)` , `A = 6.2xx10^12` and `R = 8.314` `J/(mol K)` .
`ln (6xx10^5) = -40000/(8.314T) + ln (6.2xx10^12)`
`T = 40000/(8.314( ln(6.2xx10^12) - ln(6xx10^5)))`
`T = 297.89`
Hence, the temperature is 297.89 K.
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