/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Problem 61 (a) What is meant by the term el... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 14: Problem 61

(a) What is meant by the term elementary reaction? (b) What is the difference between a unimolecular and a bimolecular elementary reaction? (c) What is a reaction mechanism?

Short Answer

Expert verified
(a) An elementary reaction is a single-step chemical process in which reactants directly change into products in one collision event, with a consistent reaction rate depending on the concentrations of reacting species. (b) A unimolecular elementary reaction involves the rearrangement or decomposition of a single molecule, with the reaction rate depending on the concentration of that reactant. A bimolecular elementary reaction involves a collision event between two reacting species, with the reaction rate depending on both reactants' concentrations. (c) A reaction mechanism is a series of elementary reactions that describe the pathway of a chemical reaction from reactants to products, providing a detailed description of molecular collisions, bond rearrangements, and energy changes during the reaction process.

Step by step solution

01

(a) Definition of Elementary Reaction)

An elementary reaction is a basic chemical process that represents a single step in a reaction mechanism. In an elementary reaction, reactants directly change into products in one collision event, with a consistent rate of reaction depending only on the concentrations of reacting species.
02

(b) Unimolecular vs Bimolecular Elementary Reactions)

A unimolecular elementary reaction involves the rearrangement or decomposition of a single molecule or reactant. The rate of a unimolecular reaction depends solely on the concentration of this single reactant. An example of a unimolecular reaction is the isomerization of an alkene, where one isomer transforms into another. A bimolecular elementary reaction, on the other hand, involves a collision event between two reacting species or molecules. The rate of a bimolecular reaction depends on the concentrations of both reactants. An example of a bimolecular reaction is a nucleophilic substitution reaction, in which a nucleophile replaces a leaving group on a molecular structure.
03

(c) Reaction Mechanism Definition)

A reaction mechanism is a series of elementary reactions or steps that describe the pathway of a chemical reaction, from reactants to products. It provides a detailed description of how molecular collisions, bond rearrangements, and energy changes occur during the reaction, helping chemists understand the underlying principles and kinetics of the reaction process. Reaction mechanisms may include one or multiple steps, with each step being an elementary reaction.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

You perform a series of experiments for the reaction \(\mathrm{A} \longrightarrow \mathrm{B}+\mathrm{C}\) and find that the rate law has the form rate \(=k[\mathrm{~A}]^{x}\). Determine the value of \(x\) in each of the following cases: (a) There is no rate change when [A] is tripled. (b) The rate increases by a factor of 9 when [A] is tripled. (c) When [A] is doubled, the rate increases by a factor of 8 . [Section 14.3]

(a) Explain the importance of enzymes in biological systems. (b) What chemical transformations are catalyzed (i) by the enzyme catalase, (ii) by nitrogenase?

(a) What factors determine whether a collision between two molecules will lead to a chemical reaction? (b) According to the collision model, why does temperature affect the value of the rate constant?

You study the effect of temperature on the rate of two reactions and graph the natural logarithm of the rate constant for each reaction as a function of \(1 / T\). How do the two graphs compare (a) if the activation energy of the second reaction is higher than the activation energy of the first reaction but the two reactions have the same frequency factor, and (b) if the frequency factor of the second reaction is higher than the frequency factor of the first reaction but the two reactions have the same activation energy? [Section \(14.5\)

What is the molecularity of each of the following elementary reactions? Write the rate law for each. (a) \(\mathrm{Cl}_{2}(g) \rightarrow 2 \mathrm{Cl}(g)\) (b) \(\mathrm{OCl}^{-}(a q)+\mathrm{H}_{2} \mathrm{O}(l) \rightarrow \mathrm{HOCl}(a q)+\mathrm{OH}^{-}(a q)\) (c) \(\mathrm{NO}(g)+\mathrm{Cl}_{2}(g) \longrightarrow \mathrm{NOCl}_{2}(g)\)
See all solutions

Recommended explanations on Chemistry Textbooks

Chemical Analysis

Read Explanation

Nuclear Chemistry

Read Explanation

Inorganic Chemistry

Read Explanation

Ionic and Molecular Compounds

Read Explanation

The Earths Atmosphere

Read Explanation

Chemical Reactions

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.