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A first order reaction is 4 times faster at 50 c than it is at 25...

A first order reaction is 4 times faster at 50 c than it is at 25 c what is the activation energy?

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Answer #1

The expression for the energy of activation Ea is

R is the ideal gas constant (8.314 J/K.mol), k is the rate constant at temperature T and k' is the rate constant at temperature T'

T = 25 + 273 K = 298 K

T' = 50 + 273 K = 323 K

k' = 4 k (since reaction is four times faster at 50 c than at 25 c

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