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Ch.14 - Chemical Kinetics
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All textbooksTro 4th EditionCh.14 - Chemical KineticsProblem 78b

Chapter 14, Problem 78b

Consider this two-step mechanism for a reaction: NO2( g) + Cl2( g) →k1 ClNO2( g) + Cl( g) Slow NO2( g) + Cl( g) →k2 ClNO2( g) Fast b. Identify the intermediates in the mechanism.

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Hi everyone here we have a question asking us to identify the intermediates in the mechanism A. Two forms A Fast A plus C. B forms C plus B. A. Slow and A plus B. A. Forms B A. Too fast. So let's see what we can cancel out here. We can cancel out A. We can cancel out B. A. So this gives us a two plus C. B Forms C Plus B. A. two. The intermediates are the species that are generated by one step and consumed by other steps. So in this case it is A N. B. A. And that is our final answer. Thank you for watching. Bye.
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Textbook Question

Consider this overall reaction, which is experimentally observed to be second order in AB and zero order in C: AB + C → A + BC Is the following mechanism valid for this reaction? AB + AB →k1 AB2 + A Slow AB2 + C → k2 AB + BC Fast

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Textbook Question

Consider this three-step mechanism for a reaction:

Cl2 (g) k1⇌k2 2 Cl (g) Fast

Cl (g) + CHCl3 (g) →k3 HCl (g) + CCl3 (g) Slow

Cl (g) + CCl3 (g) →k4 CCl4 (g) Fast

a. What is the overall reaction?

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Textbook Question

Consider this three-step mechanism for a reaction:

Cl2 (g) k1⇌k2 2 Cl (g) Fast

Cl (g) + CHCl3 (g) →k3 HCl (g) + CCl3 (g) Slow

Cl (g) + CCl3 (g) →k4 CCl4 (g) Fast

c. What is the predicted rate law?

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Textbook Question

Many heterogeneous catalysts are deposited on high-surfacearea supports. Why?

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Textbook Question

Suppose that the reaction A¡products is exothermic and has an activation barrier of 75 kJ>mol. Sketch an energy diagram showing the energy of the reaction as a function of the progress of the reaction. Draw a second energy curve showing the effect of a catalyst.

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Textbook Question

The activation barrier for the hydrolysis of sucrose into glucose and fructose is 108 kJ>mol. If an enzyme increases the rate of the hydrolysis reaction by a factor of 1 million, how much lower must the activation barrier be when sucrose is in the active site of the enzyme? (Assume that the frequency factors for the catalyzed and uncatalyzed reactions are identical and a temperature of 25 °C.)

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