The enzyme carbonic anhydrase catalyzes the reaction CO2(g) + H2O(l) HCO3- (aq) + H+(aq). In water, without the enzyme, the reaction proceeds with a rate constant of 0.039 s-1 at 25 °C. In the presence of the enzyme in water, the reaction proceeds with a rate constant of 1.0 106 s-1 at 25 °C. Assuming the collision factor is the same for both situations, calculate the difference in activation energies for the uncatalyzed versus enzyme-catalyzed reaction.Subtracting the first and the second equation we obtain

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ultramarinegnat168Lv1

31 Mar 2020

The enzyme carbonic anhydrase catalyzes the reaction CO₂(g) + H₂O(l) HCO₃^- (aq) + H⁺(aq). In water, without the enzyme, the reaction proceeds with a rate constant of 0.039 s^-1 at 25 °C. In the presence of the enzyme in water, the reaction proceeds with a rate constant of 1.0 10⁶ s^-1 at 25 °C. Assuming the collision factor is the same for both situations, calculate the difference in activation energies for the uncatalyzed versus enzyme-catalyzed reaction.
Subtracting the first and the second equation we obtain

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Nelly StrackeLv2

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The enzyme urease catalyzes the reaction of urea, (NH₂CONH₂), with water to produce carbon dioxide and ammonia. In water, without the enzyme, the reaction proceeds with a first-order rate constant of 4.15 × 10^-5 s^-1 at 100 °C. In the presence of the enzyme in water, the reaction proceeds with a rate constant of 3.4 × 10⁴ s^-1 at 21 °C. (a) Write out the balanced equation for the reaction catalyzed by urease. (b) If the rate of the catalyzed reaction were the same at 100 °C as it is at 21 °C, what would be the difference in the activation energy between the catalyzed and uncatalyzed reactions? (c) In actuality, what would you expect for the rate of the catalyzed reaction at 100 °C as compared to that at 21 °C? (d) On the basis of parts (c) and (d), what can you conclude about the difference in activation energies for the catalyzed and uncatalyzed reactions?

byzantiumllama380

The enzyme urease catalyzes the reaction of urea, (NH2CONH2), with water to produce carbon dioxide and ammonia. In water, without the enzyme, the reaction proceeds with a first-order rate constant of 4.15 Ã10â5sâ1 at 100 âC. In the presence of the enzyme in water, the reaction proceeds with a rate constant of 3.4 Ã104sâ1 at 21 âC.

If the rate of the catalyzed reaction were the same at 100 âC as it is at 21 âC, what would be the difference in the activation energy between the catalyzed and uncatalyzed reactions?