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Ch.14 - Chemical Kinetics

Chapter 14, Problem 91b

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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everyone to wear direction below. And the reaction is second order in nitric oxide impressed order and chlorine gas. And the rate of disappearance is 3.44 cents to four m/s When the concentration of magic oxide and chlorine gas are $2.5 and tube boiler. Or as conflict the value of the rate constant. We know that the right long equation is rape Equals rate constant. Construction of eight. The power of X and X. Is the order with respect to a concentration of B. The power of why and why is the order with respect to be over this our rate if it's okay. Construction of magic outside the power of X. Construction of chlorine gas, the power of why so far right. We're gonna have the right concept, concentrate on the match outside to the second power because we have second order in natural oxide construction of chlorine gas for the first power. Our first order and flowing gas. We know that our rate. It was 3.44 Have 10 to the four mile per second in the concentrations oxide in flooring gas or 2.5 Muller and to Mueller. If we plug in our values, we're gonna get 3.44 sensitive for per second. He goes to the right constant, Times 2.5 More where times to Mahler You get 3.44 times 10 to the four mile per second. It was the right constant. That's 12.5 more cute for the right constant. We get 2.75 since the third bullet to the negative. Two power from second to mega one power. Thanks for watching my video. And I hope it was helpful.
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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? (b) If the reaction is an elementary reaction, the rate law is second order.

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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. (c) What are the units of the rate constant?

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Textbook Question

Consider the following reaction between mercury(II) chloride and oxalate ion: 2 HgCl21aq2 + C2O4 2 - 1aq2¡2 Cl - 1aq2 + 2 CO21g2 + Hg2Cl21s2 The initial rate of this reaction was determined for several concentrations of HgCl2 and C2O4 2 -, and the following rate data were obtained for the rate of disappearance of C2O4 2 - : Experiment 3HgCl2 4 1M 2 3C2o4 24 1M 2 Rate 1M,s2 1 0.164 0.15 3.2 * 10-5 2 0.164 0.45 2.9 * 10-4 3 0.082 0.45 1.4 * 10-4 4 0.246 0.15 4.8 * 10-5 (c) What is the reaction rate when the initial concentration of HgCl2 is 0.100 M and that of C2O4 2- is 0.25 M if the temperature is the same as that used to obtain the data shown?

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Textbook Question

The reaction 2 NO2¡2 NO + O2 has the rate constant k = 0.63 M- 1s - 1. (b) If the initial concentration of NO2 is 0.100 M, how would you determine how long it would take for the concentration to decrease to 0.025 M?

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