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A. Oz 28. Which of the following elementary reactions is unimolecular? sunlight → 02 +0 B....
Which of the following represents a unimolecular elementary step in a reaction mechanism? A) O + O3(g) → 2 O2(g) B) 2 O3(g) → 3 O2(g) C) O3(g) → O2(g) + O D) O2(g) + O → O3(g) E) O + O → O2(g)
Which of the following expressions describes the rate of reaction for the elementary unimolecular process: O3 → 02 + O? O Rate of reaction = k[02] [O] O Rate of reaction = k[03] O Rate of reaction = k0313 O Rate of reaction = k02) [O] For the following elementary reaction: HF + NH3 + F + NH. The rate of consumption of the reactants and rate of formation of products is given by which set of expressions? O 4HF1...
Consider the reaction between CO and Oz (carbon monoxide post combustion) described by the elementary reactions below. The temperature of the reacting system is 1500 K. The initial concentrations are shown below. Plot the concentration of each species as a function of time. Species: species initial concentration 1000 ppm 0 3% remainder There are four species. Elementary reactions: 1. CO + O2 + CO2 +0 2. Oz+M+0+0+M 3. CO +O+M + CO2 +M k1 = 3.1 X 10'exp(-37.6/RT) k2 =...
Examine the following atmospheric reactions and put a check on the reactions that are part of the Chapman Cycle. Select all that are True. 03 + hy → 0* + O2 02* + M → 02 + M 02 + hy →O+O H20 + 0* → 20H ONO + 03 → NO2 + O2 0 + 0 02 00* + M + 0 + M N2 + hv → Ny+ Submit Answer Incorrect. Tries 2/12 Previous Tries
Question 8 Step 1: H,02 + I +10- +H,0 Step 2: H,02 + 10 + H2O + O2 +I" The mechanism for a chemical reaction is shown above. Which of the following statements about the overall reaction and rate laws of the elementary reactions is correct? The chemical equation for the overall reaction is 2 H202 + I and the rate law for elementary step 2 is rate = k[H,02][10 + 2 H2O + O2 +I , ]. + H2O...
Which reaction has this k expression? K = [N,02] (O2)?[N] O 2NO+02 2 NO2 ON,O4 = 2 NO O2 NO2 + 2NO+ 02 O 2N2 + O2 = 2N,0 2N,0 = 2N, + 0, ON,O4 = N2 + 20, ONO2 + N,0 – 3NO
8. Which of the following reactions cannot proceed through a single elementary step in view of the experimental rate law given? (a) NO(g) + O3(g) ⟶ NO2(g) + O2(g) rate = k[NO][O3] (b) 2HI(g) ⟶ H2(g) + I2(g) rate = k[HI]2 (c) C4H8(g) ⟶ 2C2H4(g) rate = k[C4H8] (d) 2NO(g) + H2(g) ⟶ N2(g) + H2O(g) rate = k[NO][H2] (e) 2NO(g) + Cl2(g) ⟶ 2NOCl(g) rate = k[NO]2[Cl2] The worksheet says that the answer is D, but I don’t get...
Which of the following processes is exothermic, given the following: N2(g) +2 02(g) --> N2O4(1) Дн° = 9.67 kJ/mol N2(g) +2 02(g) -->2 No2(9) Дн° = 6770 kJ/mol Multiple Choice 2 N2(g) +4 O2(g) --> 2 N2O4(1) o 2 N2(9) +4 O2(9) --> 4 NO2(9) o %N2(9) + O2(9) --> %N2O4(1) o N2O4() -> N2(9) + 2 029) o 2 N2(9) +4 O2(9) --> 2 No2(0) + N2O4(0)
Please answer both questions. Thank you For which of the following reactions is ASO > 0? a. 2 C2H6(g) +702(g) → 4 CO2(g) + 6 H2O(g) b. H2CO(g) + O2(g) → CO2(g) + H20(1) C. N2(g) + 3 H2(g) → 2 NH3(g) d. NH3(g) + HI(g) → NH41(s) QUESTION 5 For which of the following reactions is AS° at 25 °C closest to zero? a. N2(g) + O2(g) → 2 NO(g) b. H2(g) + 12(s) → 2 HI(g) c. CH3CHO(g)...
2. (20 points) Consider the following set of three reversible elementary reactions: R1: O2 + M + 0+0+M R2: O2 + OH O3 R3: O+O3 + O2 + O2 Write expressions for the time-rate-of-change of molar concentration of the four species O, O2, O3, and M for this reaction set. Your expressions should be in terms of the molar concentrations of the four species involved in the reactions, and the forward and reverse rate coefficients for the three reactions.