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19/09/2020 10:27 am
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The number of molecules with energy greater than the threshold energy for a reaction increases fivefold by a rise of temperature from 27ºC to 42ºC. Its energy of activation in J/mol is ………….. (Take in 5 = 1.6094; R = 8.314 J mol–1)
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19/09/2020 10:31 am
k = Ae- Ea/RT
In(K2/K1) = Ea/R[1/T1 - 1/T2]
In(5) = Ea/8.314[1/300 - 1/315]
1.6094 = Ea/8.314[15/300 x 315]
Ea = 84297 J