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Ch.14 - Chemical Kinetics
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All textbooksBrown 14th EditionCh.14 - Chemical KineticsProblem 89b

Chapter 14, Problem 89b

Consider the reaction A + B → C + D. Is each of the following statements true or false? (b) If the reaction is an elementary reaction, the rate law is second order.

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Hey folks, welcome back. So here, I'm going to be writing the rate law for the given elementary reaction. So since here we're only given one elementary elementary reaction. Uh the rate law is going to be based off of this reaction. Now we do know that rate law only looks at reactant, right? And then ignores product product. So we don't really need to look at the product side here. So rate law, I was going to be Great Law equals two K, which is the rate constant, right? And then we're going to have the concentration of all of the reactant that we have here. We only have one reactant. So it's just going to be that reactant in H four S C. N. And then as far as the order, because we only have one mole of this compound on the reactant side, it's just going to be to the first power. But you don't really need to write this one. You can if you want to, but it's not necessary. So it's going to be this one right here. And I noticed that the reactant and the products look very similar to make sure that you Select the correct one. So it's the one that has the ammonia. And the thought of cyanide ion. So it's going to be read along this one right here. Okay, so that's going to be our answer. Thanks so much for watching and we'll see you in the next problem
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Textbook Question

The enzyme urease catalyzes the reaction of urea, 1NH2CONH22, 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. (c) In actuality, what would you expect for the rate of the catalyzed reaction at 100 C as compared to that at 21 C?

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Textbook Question

The activation energy of an uncatalyzed reaction is 95 kJ/mol. The addition of a catalyst lowers the activation energy to 55 kJ/mol. Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the reaction at (a) 25 C

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Textbook Question

The activation energy of an uncatalyzed reaction is 95 kJ/mol. The addition of a catalyst lowers the activation energy to 55 kJ/mol. Assuming that the collision factor remains the same, by what factor will the catalyst increase the rate of the reaction at (b) 125 °C?

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Textbook Question

Consider the reaction A + B → C + D. Is each of the following statements true or false? (c) If the reaction is an elementary reaction, the rate law of the reverse reaction is first order.

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Textbook Question

The reaction 2 NO(g) + O2(g) → 2 NO2 (g) is second order in NO and first order in O2. When [NO] = 0.040 M, and 3O24 = 0.035 M, the observed rate of disappearance of NO is 9.3⨉10-5 M/s. (b) What is the value of the rate constant?

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Textbook Question

The reaction 2 NO(g) + O2(g) → 2 NO2 (g) is second order in NO and first order in O2. When [NO] = 0.040 M, and 3O24 = 0.035 M, the observed rate of disappearance of NO is 9.3⨉10-5 M/s. (c) What are the units of the rate constant?

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