The experimental rate law for the decomposition of X2Y to X2 and Y2 is Rate = kexp[X2Y]?. Two mechanisms are proposed.Mechanism A:X2Y <--?-> X2 +YX2Y + Y- X2 + Y2Mechanism B:2X2Y <-?--> X4Y2X4Y2 - 2X2 + Y2Where <--?--> can be - (a simple forward reaction) or = (an equilibrium) depending on how the choices below are described. Which of the following could be a correct mechanism?I. Mechanism A with the first step being a fast equilibrium and the second step being slow.II. Mechanism A with the first step being a slow forward reaction and the second step being fast.II. Mechanism B with the first step being a fast equilibrium and the second step being slow.IV. Mechanism B with the first step being a slow forward reaction and the second step being fast.

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The experimental rate law for the decomposition of X2Y to X2 and Y2 is Rate = kexp(X2Y]². Two mechanisms are proposed. Mechanism A: X2Y <--?-> X2 + Y X2Y + Y- X2 + Y2 Mechanism B: 2X2Y <-?-> X4Y2 X4Y2 2X2 + Y2

The experimental rate law for the decomposition of X2Y to X2 and Y2 is Rate = kexp(X2Y]². Two mechanisms are proposed. Mechanism A: X2Y <--?-> X2 + Y X2Y + Y- X2 + Y2 Mechanism B: 2X2Y <-?-> X4Y2 X4Y2 2X2 + Y2

Physical Chemistry

2nd Edition

ISBN:9781133958437

Author:Ball, David W. (david Warren), BAER, Tomas

Publisher:Ball, David W. (david Warren), BAER, Tomas

Chapter20: Kinetics

Section: Chapter Questions

Problem 20.85E

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Concept explainers

Polymerization Kinetics

Polymerization is a chemical process in which one or more monomers combine to produce a very large chain-like molecule called a polymer. The functional groups present on the monomers and their steric effects are responsible for polymerization through a sequence of reactions that diverge in complexity. There exists a stable covalent chemical bond between monomers that sets apart polymerization from other processes. Polymerization is generally classified into step-growth and chain polymerization. Polymers are categorized into linear polymer and cross-linked polymers that are produced either by condensation or additional polymerization.

Question

The experimental rate law for the decomposition of X2Y to X2 and Y2 is Rate = kexp[X2Y]?. Two mechanisms are proposed.
Mechanism A:
X2Y <--?-> X2 +Y
X2Y + Y- X2 + Y2
Mechanism B:
2X2Y <-?--> X4Y2
X4Y2 - 2X2 + Y2
Where <--?--> can be - (a simple forward reaction) or = (an equilibrium) depending on how the choices below are described. Which of the following could be a correct mechanism?
I. Mechanism A with the first step being a fast equilibrium and the second step being slow.
II. Mechanism A with the first step being a slow forward reaction and the second step being fast.
II. Mechanism B with the first step being a fast equilibrium and the second step being slow.
IV. Mechanism B with the first step being a slow forward reaction and the second step being fast.

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