Consider the gas phase reaction 2 NO + H₂ → N₂O + H₂O The experimental rate law is found to be R = = [NO]²[H₂] Which of the mechanisms shown below is consistent with the information about this reaction given in this question? 2H (fast) Step 1: H₂ Step2: H+2 NO→ Step 3: H + OH → N₂O + OH (slow) H₂O (fast) Step 1: NO + H₂ → Step2: N + NO → N₂O N + H₂O (slow) (fast) Step 1: NO + NO NO₂ + N Step2: NO₂ + H₂ → NO + H₂O Step 3: N + NO → Step 1: NO + NO N₂O₂ Step2: N₂O₂ + H2N₂O + H₂O O N₂O (slow) (fast) (fast) (fast) (slow)

A chemistry graduate student is studying the rate of this reaction: CICH,CH, CI (g) → CH,CHC1 (g)+HC1 (g) She fills a reaction vessel with CICH,CH,Cl and measures its concentration as the reaction proceeds: time [CICH,CH,CI] (seconds) 0.0200M 10. 0.0106M 20. 0.00563 M 30. 0.00299M 40. 0.00158M Use this data to answer the following questions.

You and your lab partner are studying the rate of a reaction, A + B --> C. You make measurements of the initial rate under the following conditions: O [A] = 6.0 and [B] = 0.6 O [A] = 3.0 and [B] = 0.6 O [A] = 4.5 and [B] = 0.6 [A] = 1.5 and [B] = 1.2 O [A] = 3.0 and [B] = 1.8 [A] = 1.5 and [B] = 1.8 O [A] = 3.0 and [B] = 1.2 O [A] = 7.5 and [B] = 0.6 Rate = K[A][B][C] Rate = K[A][C] Experiment [A] (M) [B] (M) Rate (M/s) (a) Which of the following reactant concentrations could you use for experiment 3 in order to determine the rate law, assuming that the rate law is of the form, Rate = k [A]* [B]Y? Choose all correct possibilities. k[A]² [C] O Rate = K[A][C]² Rate = k[A]²[C]² Rate = k[A]³ [C] O Rate = K[A][C]³ 1 2 Rate = 1.5 3.0 (b) For a reaction of the form, A + B + C --> Products, the following observations are made: tripling the concentration of A increases the rate by a factor of 9, doubling the concentration of B has no effect on the rate, and doubling the concentration of C…

What is the average reaction rate for 2 NOB1(g) → Br,(g)+2 NO(g) over the first 10 seconds? Time [NOBr] (s) (mol/L) 0.00 0.0100 2.00 0.0071 4.00 0.0055 6.00 0.0045 8.00 0.0038 10.00 0.0033 [NOBI] (mol/L) mol/L 0.0100 0.0090 0.0080 0.0070 0.0060 0.0050 0.0040 0.0030 0.0020 0.00 5.00 10.00 time (s) 6.7 x 10-3 M/s d. 3.4 x 10-4 Mls a. b. 6.7 x 10-4 Mls e. 1.3 x 10-3 M/s c. 3.3 x 10-3 M/s Oxygen gas is formed by the decomposition of potassium chlorate at high temperatures according to the reaction 2 KC10, (s) → 2 KCI(s)+3 O,(g). Suppose 1.23 g KCIO; is placed in a container connected to an open-end mercury manometer on a day when atmospheric pressure is 1.00 atm. Once the reaction is complete, the height of the mercury column in the U-tube on the side of the reaction container rises by 172 mmHg. What is the pressure of O2 gas produced by the reaction? d. 0.774 atm e. 36.7 in Hg a. 1348 torr b. 22.9 kPa c. 0.559 bar