Consider the following elementary steps that make up the mechanism of a certain reaction:
3A→B+C
B+2D→C+F
If the overall reaction is 3A+2D→2C+F, Which species is a reaction intermediate?
Consider the following elementary steps that make up the mechanism of a certain reaction: 3A→B+C B+2D→C+F...
To understand how elementary steps make up a mechanism and how the rate law for an elementary step can be determined. Very often, a reaction does not tell us the whole story. For instance, the reaction NO2(g)+CO(g)→NO(g)+CO2(g)NO2(g)+CO(g)→NO(g)+CO2(g) does not involve a collision between an NO2NO2 molecule and a COCO molecule. Based on experimental data at moderate temperatures, this reaction is thought to occur in the following two steps: NO2(g)+NO2(g)→NO3(g)+NO(g)NO2(g)+NO2(g)→NO3(g)+NO(g) NO3(g)+CO(g)→CO2(g)+NO2(g)NO3(g)+CO(g)→CO2(g)+NO2(g) Each individual step is called an elementary step. Together, these...
Question 1.b of 12 A reaction mechanism has the following proposed elementary steps: Step 1: A B +C Step 2: A+B →D Step 3: 2 A+D → C+E The overall reaction is 4 A 2 C + E. Which species are intermediates in this reaction? A) B and C B) B C) B and D D) D E) C and D
Sketch a reaction coordinate energy diagram for the following elementary steps, which describe an endothermic reaction. Write the overall rate law for this process. What is the reaction order? A+B=3C. fastest C+2D= . Slow E=F. Fast
Which sequence of elementary steps describes a reasonable. mechanism for the following overall reaction? What major E2 product would form on reaction of (25,3R) 2- bromo-3-methylpentane with base? он снон осн, HO (b) (c) (a) A. (2)3-methylpent-2-ene B. (E) 3-methylpent-2-ene C (BR) 3-methylpent-1-ene D. ()3-methylpenta-1,3-diene L Heterolysis 2. Coordination 3. Proton transfer I. Proton transfer 2. S2 3. Proton transfer 1.S,2 2. Proton transfer 3. Proton transfer Consider the 5,2 step in the first line below, which takes place in...
Which statement below concerning elementary processes (or steps), the mechanism of a reaction and the overall reaction is correct? The overall rate law derived from the mechanism must agree with the observed rate law for the overall reaction. The rate law for an elementary process can be predicted from the chemical equation for that process. The rate law for the rate determining step is directly related to the rate law for the overall reaction. All the above statements are either...
Which statement is false concerning elementary steps in a reaction mechanism? the rate law can be deduced from the stoichiometry of reactants for an elementary step the overall molecularity for an elementary step is the sum of the stoichiometric coefficients for all reactants in that step the rate law for an elementary step must be determined experimentally the rate law for the overall reaction is always the same as the rate law for the slowest elementary step both (c) and...
step by step Rates of Non-elementary reactions Class Activity Consider the following mechanism: 2NO N202 k-1 NzOz + C12-2+2 NOCI a. What is the net reaction? b. Which of the above species is an intermediate? Why? c. Find the rate of the overall reaction using the steady-state approximation. d. Repeat part (c) using the rate-determining step method, assuming the first-step is fast and at equilibrium and the second step is slow. 2NO N,02 (ast,at equilibrium) k-1 N202 + Cl2-22 NOCI...
If the reaction 3A +B+C 2D + E is second order in A, zero order in B and third order overall, what is order in C? 1 None of these 4.5 3 0 0.5
At 25 ∘C25 ∘C, the equilibrium partial pressures for the reaction 3A(g)+4B(g)↽−−⇀2C(g)+2D(g)3A(g)+4B(g)↽−−⇀2C(g)+2D(g) were found to be ?A=5.99 PA=5.99 atm, ?B=4.23 PB=4.23 atm, ?C=4.41 PC=4.41 atm, and ?D=5.07 PD=5.07 atm. What is the standard change in Gibbs free energy of this reaction at 25∘C 25∘C? Δ?∘rxn=
QUESTION 3 The following elementary steps are proposed for a reaction mechanism: 1. Cl2 (9) — 2C1 (9) 2. CI (g) + CHCl3 (9) — HCI (g) + CC13 (g) 3. CI (9) + CC13 (9) - CC14 (9) Which one of the following is an intermediate of the reaction: O HCI О ссіз O CCl4 O Cl2 O Co2