Enzymes accelerate reaction rates by 10 7 to 10 17 compared to the uncatalyzed reactions. The ratio of the rate of the catalyzed reaction to the rate of the uncatalyzed reaction ( rate cat / rate uncat ) is known as the rate enhancement. The rate enhancement can be related to the difference in the free energies of activation. Note: The difference in the free energies of activation, or Ξ G β β‘ uncat β Ξ G β β‘ cat , can be expressed more succinctly as Ξ Ξ G β β‘ . Ξ Ξ G β β‘ = R T ln ( rate cat rate uncat ) From the given rates, calculate the rate enhancement and the Ξ Ξ G β β‘ in kilojoules per mole at T = 25 β C . Enter each answer as a whole number. Uncatalyzed rate = 10 β 6 s β 1 Catalyzed rate = 10 2 s β 1 R = 8.3145 J / ( K β mol )
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Enzymes accelerate reaction rates by 10 7 to 10 17 compared to the uncatalyzed reactions. The ratio...
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