MISSED THIS? Watch KCV: Reaction Mechanisms, IWE: Reaction Mechanisms; Read Section 15.6. You can click on the Review link to access the section in your eText. Consider this three-step mechanism for a reaction: Cl₂ (g) Cl(g) + CHCl3 (g) Cl(g) + CC13 (g) 2C1(g) k₂ → HCl(g) +CC13(g) ką CCl4 (g) k₁ (fast) (slow) (fast) Part A What is the overall reaction? Express your answer as a chemical equation. Identify all of the phases in your answer. ► View Available Hint(s) xa ΑΣΦ Submit Xb a b x → Cl₂ +Cl→HC1+CC14 A chemical reaction does not occur for this question. Previous Answers Request Answer X ?

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

13. The production of nitric oxide is governed by the following reaction: 4NH3(g) +502(g) → 4NO(g) + 6H2O(g). produced? If the rate at which NO is produced is 6.35 x 10-2 mol/ L*s, at what rate is H₂O a. 8.29 x 10-3 mol/L✶ s b. 9.53 x 10-2 mol/L*s c. 6.35 x 10-2 mol/L*s d. 7.94 x 10-2 mol/L*s 14. Sulfur trioxide production follows the reaction: 2 SO2(g) + O2(g) → 2 SO3(g) consumed? If the rate at which SO3 is produced is 4.28 x 10 mol L-'s-', at what rate is O2 a. 4.28 × 10-4 mol L-'s-1 b. 1.08 x 10-3 mol L-'s-1 c. 1.07 × 10-4 mol L-'s-1 d. 2.14 x 104 mol L-'s-1 15. Consider the following reaction: 2A+B→ C. A kinetics study on this reaction yielded the following data: [A] mol/L [B] mol/L Rate=mol/L/s 0.0450 0.0250 5.03 x 10-3 0.0450 0.0500 2.01 x 10-2 0.0900 0.0250 5.03 x 10-3 What is the order of the reaction with respect to ([A], [B])? a. 1, 2 b. 2, 1 c. 2, 0 d. 0, 2

The kinetic data shown below were observed for the reaction:    BF3 (g)     +   NH3 (g)    --------->      F3B·NH3 (g)   Trial # [BF3] (mol/L) [NH3] (mol/L) Rate (M/s) 1 0.250 0.250 0.2130 2 0.250 0.125 0.1065 3 0.200 0.100 0.0682 4 0.350 0.100 0.1193 5 0.175 0.100 0.0596   b.  What is the order with respect to [BF3]?     (Hint: provide the number for the order, i.e. fourth order = 4)

A chemistry graduate student is studying the rate of this reaction: H₂CO3 (aq) → H₂O (aq) + CO₂ (aq) He fills a reaction vessel with H₂CO3 and measures its concentration as the reaction proceeds: time (seconds) 0 10. 0.0334M 20. [H₂CO3] 0.100M 30. 0.0200M 0.0143 M 40. 0.0111 M Use this data to answer the following questions. Write the rate law for this reaction. Calculate the value of the rate constant k. Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. rate = k k = 0 x10 ロ・ロ X

A. Consider the following proposed mechanism for the production of chlorine dixoide from chlorine and ozone. Draw a reaction coordinate diagram for this reaction. Label reactants, products, transition states, intermediates, and activation energy on your sketch. Assume the reaction is endothermic. NOTE: CI is chlorine, not Carbon lodide Overall: Cl₂ (g) + 203 (g) → 2 CIO₂ (g) + O₂ (g) Step 1: Cl₂ (g) → 2 Cl (g) fast Step 2: Cl (g) + Os (g) CIO₂ +O fast Step 3: O (g) + O3 (g) → 202 (g) fast Step 4: Cl (g) + O2 (g) → CIO2 (g) slow

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True or False  _____ The kinetics of reaction deals with the energies of the products and the reactants. _____ Thermodynamics deals with reaction rates. _____ Understanding the reactions kinetics can help you understand the mechanism of a reaction. _____ Transition states are stable. _____ This is an example of an overall second order reaction (rate = kr[CH3Br][CH3-]) _____ The rate determining step is the step with the lowest activation energy.

A chemistry graduate student is studying the rate of this reaction: 2H1 (g) - H₂ (g) +1₂ (g) She fills a reaction vessel with HI and measures its concentration as the reaction proceeds: time (seconds) 0 0.10 [HI] 1.00 M 0.227M 0.20 0.128M 0.30 0.0894M 0.40 0.0686M Use this data to answer the following questions. Write the rate law for this reaction. Calculate the value of the rate constant k Round your answer to 2 significant digits. Also be sure your answer has the correct unit symbol. rate=& D.D

Enter your answer in the provided box. For the simple decomposition reaction AB(g)→ A(g) + B(g) rate = k[AB]2 and k = 0.10 L/mol·s. How long will it take for [AB] to reach 1/3 of its initial concentration of 1.50 M? t =_____s