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Question

The decomposition of hydrocarbon follows the equation k=(4.5×1011s1)e28000 K/T. Calculate the activation energy Ea


Solution

According to Arrhenius equation
k=AeEaRT(i)
According to the available data
k=(4.5×1011s1)e28000K/T(ii)
On comparing both equations;
EaRT=28000KTEa=(28000K)×R=(28000K)×(8.314 K1Jmol1)=232792 Jk mol1Ea=232.792 kJ1 mol1

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