Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 °C) in the absence of a catalyst Y Part A Assuming that the collision factor remains the same, by how much must an enzyme lower the activation energy of the reaction in order to achieve a 5x105-fold increase in the reaction rate? Express your answer in kilojoules per mole to one significant figure. [ΨΕΙ ΑΣΦ Ea,uncatalyzed - Ea,catalyzed = 148 Sulymit Previous Answers Request Answer ? kJ/mol

Suppose that a certain biologically important reaction is quite slow at physiological temperature (37 °C) in the absence of a catalyst Y Part A Assuming that the collision factor remains the same, by how much must an enzyme lower the activation energy of the reaction in order to achieve a 5x105-fold increase in the reaction rate? Express your answer in kilojoules per mole to one significant figure. [ΨΕΙ ΑΣΦ Ea,uncatalyzed - Ea,catalyzed = 148 Sulymit Previous Answers Request Answer ? kJ/mol

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E, = 55.0 kJ/mol. If the rate constant of thisreaction is 3.7 x10? M-'.5 ' at 256.0 °C, what will the rate constant be at 311.0 °C?Round your answer to 2 significant digits.
The rate constant of a certain reaction is known to obey the Arrhenius equation, and to have an activation energy E=39.0 kJ/mol. If the rate constant of this -1 reaction is 6.0 x 102 M's -1 at 9.0 °C, what will the rate constant be at 53.0 °C? Round your answer to 2 significant digits. -1 k = x10
If a temperature increase from 10.0 ∘C∘C to 23.5 ∘C∘C doubles the rate constant for a reaction, what is the value of the activation barrier for the reaction? Express your answer using three significant figures.
Propose a reaction pathway consisting of only a unimolecular or bimolecular steps for the 2A+B-->C+D that is consistent with the rate law rate=k(A)(B). Make sure you label which step is the rate determining step and prove that your proposed mechanism gives both the overall reaction and overall rate law. Explain the assumptions you must make in order for your mechanism to be consistent with the actual rate law.
A certain enzymatic reaction is found to be zero ordeth respect to the substrate being converted. The rate constant for the reaction is found to be 540 M s-1. The initial concentration of the substrate is 0.350 M. When the reaction is 50% complete, what is the rate of the reaction at that point? Give your answer in M s1 but do not include units in your answer.
A certain enzymatic reaction is found to be zero order with respect to the substrate being converted. The rate constant for the reaction is found to be 750 M s-1. The initial concentration of the substrate is 0.370 M. When the reaction is 50% complete, what is the rate of the reaction at that point? Give your answer in M s-1 but do not include units in your answer.
In aqueous solution buffered at a pH of 6.75 Penicillin G (molecular weight of 334.39 g/mole) undergoes hydrolysis via a pseudo first order reaction that has an activation energy of 77.3 kJ/mole and a pseudo first order rate constant of 1.58 x 10-7 s-1 at 30°C. What is the half life (in days) of Penicillin G under the conditions described?
The recombination reaction2 HO2(g) → H2O2(g) + O2(g)has a second-order rate constant of 2E9 M-1 s-1. Calculate the half-life of the reaction if the initial concentration of HO2(g) is 2.58E-11 M.Note: the coefficient 2 in the reaction means that the integrated rate law for this reaction is:1/ct = 1/c0 + 2kt
For a drug to be effective in treating an illnens, its levels in the bloodstream must be maintained for a period of time. One way to measure the level of a drug in the body is to measure its rate of appearance in the urine. The rate of excretion of penicillin is first order, with a half-life of about 30. min. If a person receives an injecction of 21 mg of penicillin at t- 0, how much penicillin remains in the body after 3.0 hours? mg