4. The rate law for the reaction H₂ (g) + I2 (g) → 2 HI (g) was determined to be rate = k [H₂] [1₂], which led to a simple single-step bimolecular mechanism where an H₂ molecule simply collided with an I2 molecule. In the 1960s, though, different teams found spectroscopic evidence for this mechanism: (1) 1₂ (g) → 21 (g) (fast) (2) H₂ (g) + I (g) → H₂I (g) (fast) (3) H₂I (g) + I (g) → 2 HI (g) (slow) Show that this mechanism is consistent with the rate law: rate = k [H₂] [1₂]. To do this, assign individual rate constants for ALL forward and reverse reactions in the mechanism (I'm guessing k₁, k-1, k2, k-2 and k3). Then show that the overall rate law from combining individual rate laws for the mechanism steps yields rate= (some combination of k's) [H₂] [1₂], and thus k = (some combination of k's). Remember that there should be no reaction intermediates in the rate law, only reactants. \

4. The rate law for the reaction H₂ (g) + I2 (g) → 2 HI (g) was determined to be rate = k [H₂] [1₂], which led to a simple single-step bimolecular mechanism where an H₂ molecule simply collided with an I2 molecule. In the 1960s, though, different teams found spectroscopic evidence for this mechanism: (1) 1₂ (g) → 21 (g) (fast) (2) H₂ (g) + I (g) → H₂I (g) (fast) (3) H₂I (g) + I (g) → 2 HI (g) (slow) Show that this mechanism is consistent with the rate law: rate = k [H₂] [1₂]. To do this, assign individual rate constants for ALL forward and reverse reactions in the mechanism (I'm guessing k₁, k-1, k2, k-2 and k3). Then show that the overall rate law from combining individual rate laws for the mechanism steps yields rate= (some combination of k's) [H₂] [1₂], and thus k = (some combination of k's). Remember that there should be no reaction intermediates in the rate law, only reactants. \

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...

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