Domanda del libro di testo
What is the molecularity of each of the following elementary reactions? Write the rate law for each. (a) Cl2(g) → 2 Cl(g)
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Ch.14 - Chemical Kinetics
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Capitolo 14, Problema 65b
(b) What is the difference between a unimolecular and a bimolecular elementary reaction?
Guida verificata passo dopo passo1
Understand that an elementary reaction is a single step reaction with a specific molecularity, which refers to the number of reactant molecules involved in the reaction.
A unimolecular reaction involves a single reactant molecule undergoing a transformation to form products. An example is the decomposition of a single molecule, such as the isomerization of cyclopropane to propene.
A bimolecular reaction involves two reactant molecules colliding and reacting to form products. An example is the reaction between two molecules of hydrogen gas and one molecule of oxygen gas to form water.
Recognize that the molecularity of a reaction is determined by the number of molecules that come together to react in an elementary step, and it is always a whole number.
Note that the rate law for an elementary reaction can be directly written from its molecularity: unimolecular reactions have a first-order rate law, while bimolecular reactions have a second-order rate law.
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Elementary Reactions
Elementary reactions are the simplest types of chemical reactions that occur in a single step, involving a direct interaction between reactants. They are characterized by their molecularity, which indicates the number of reactant molecules involved in the reaction. Understanding elementary reactions is crucial for analyzing reaction mechanisms and kinetics.
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Reaction Mechanism Overview
Unimolecular Reactions
Unimolecular reactions involve a single reactant molecule that undergoes a transformation to form products. This type of reaction typically follows first-order kinetics, where the rate of reaction depends solely on the concentration of the single reactant. An example is the isomerization of a molecule, where one molecule rearranges to form another without the involvement of other reactants.
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01:02Molecularity in Reactions Example
Bimolecular Reactions
Bimolecular reactions involve two reactant molecules that collide and react to form products. These reactions can be either two molecules of the same species or two different species. Bimolecular reactions generally follow second-order kinetics, where the rate of reaction depends on the concentrations of both reactants. An example is the reaction between two different gases to form a product.
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01:31Molecularity in Reactions
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What is the molecularity of each of the following elementary reactions? Write the rate law for each. (b) OCl-(aq + H2O(l) → HOCl(aq) + OH-(aq)
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Domanda del libro di testo
The temperature dependence of the rate constant for a reaction is tabulated as follows: Temperature (K) k 1M 1 s1 2 600 0.028 650 0.22 700 1.3 750 6.0 800 23 Calculate Ea and A.
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