Consider the reaction mechanism: k A+B= X k-1 X+A_K2C+D Using the steady-state approximation, show that an...
2.4 Using the steady state approximation derive the rate expression for the formation of C in the reaction 2A + B (g) → 2C(9) on the basis of the following proposed mechanism ki ZA K-1 X + B K2 20 To what expression does the rate expression reduce if the second reaction is slow, the initial equilibrium established very rapidly. (8)
6. Use the steady state approximation to derive a rate law for d[D/dt with the following mechanism A+B +C Step 1) Step 2) 7. a) What is the rate law for the mechanism in question (6) if the second step is the rate-limiting step? b) Express the activation energy for the overall reaction in terms of the activation energies for each step in the mechanism from part (a)
4. The mechanism suggested for the reaction, 2 A + B +20 A+ AL I + B + 2C forward rate constant kı, backward rate constant k., constant k2 The rate law obtained on applying the steady state approximation is, A) Rate = kika[A] [B] B) Rate = kik[A] [B]/(k.1 + 2[B]) C) Rate = kık[A][B] D) Rate = kik[A]?/(k.1 +k2[B]) E) Rate = kika[A] [B]/(ki + k2[B])
2) a) Briefly describe what is meant by the steady-state approximation. tha Stredy state approximation says that we can assime the reaction is taking place ander Steady state conditions b) Consider the following reaction scheme: Express the net rate of change for B. 10+ mate = -d/A] + - + [6] + - d[e] of change dt dt at c) Provide a detailed reason why D may be quite abundant initially, but virtually gone after several hours. i n niin4...
steady state approximation rate law for this reaction: k1 Br2 <--> 2Br k-1 (this refers to reverse of Br2 to 2Br) k2 2Br + H2 ----> 2HBr
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...
A reaction has the mechanism A + B X + B rightarrow P with rate constants k_1, k_-1, and kr. Assuming a steady state approximation for [X] is valid, write the rate law for d[P]/dt?
5. (6 pts) Suppose a reaction has the following mechanism: AB B + CD Assuming steady-state of B, write an expression for the rate of the appearance of D, in terms of the reactants A and C, as well as the rate constants kı, k2, and kz.
michaelis menten and kinetics help 2. A few years after Michaelis Menten published their work Briggs and Haldane came along and expanded it using the steady state assumption. i) Based on kinetic scheme 2 how many different ways can ES be produced? i) Using the rate constants in kinetic Scheme 2 at what rate is the ES complex being produced? sed eci iv) Using the rate constants in kinetic Scheme 2 at what rate is the ES complex being destroyed?...
ation. 7. Consider a collision-induced unimolecular decomposition reaction of the form A B+C. (a) Write down the three elementary steps in a Lindemann-Hinshelwood mechanism per- taining to such a decomposition reaction. (b) Use the steady-state approximation to obtain an expression for the rate of pro- duction of the products B and C, when the concentration of A is sufficiently high that (c) Express the rate you obtained in (b) in terms of the equilibrium constant pertain- ing to the activation...