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Ch.14 - Chemical Kinetics
McMurry - Chemistry 8th Edition
McMurry8th EditionChemistryISBN: 9781292336145당신이 사용하는 게 아니라요?교과서 변경
모든 교과서McMurry 8th EditionCh.14 - Chemical Kinetics문제 45
14장, 문제 45

What is the molecularity of each of the following elementary reactions? (a) Illustration of molecularity in elementary reactions for chemical kinetics.
(b)
(c)

검증된 단계별 안내
1
Identify the number of reactant molecules involved in each elementary reaction.
For the first reaction (leftmost), count the number of individual reactant molecules.
For the second reaction (middle), count the number of individual reactant molecules.
For the third reaction (rightmost), count the number of individual reactant molecules.
Determine the molecularity based on the number of reactant molecules: unimolecular (1 molecule), bimolecular (2 molecules), or termolecular (3 molecules).

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Molecularity

Molecularity refers to the number of reactant molecules involved in an elementary reaction. It is classified as unimolecular (one molecule), bimolecular (two molecules), or termolecular (three molecules). Understanding molecularity is crucial for predicting reaction mechanisms and rates, as it directly influences how reactants collide and interact during a reaction.
추천 영상:
가이드 코스
02:38
Molecular Polarity

Elementary Reactions

Elementary reactions are single-step processes that occur in a chemical reaction, where reactants convert directly to products without any intermediates. Each elementary reaction has a specific molecularity, which can be determined by analyzing the number of reactant species involved. These reactions are fundamental to understanding the kinetics of more complex reactions.
추천 영상:
가이드 코스
03:06
Reaction Mechanism Overview

Reaction Mechanism

A reaction mechanism is a detailed description of the step-by-step process by which reactants are converted into products. It includes the sequence of elementary reactions and the molecularity of each step. Understanding the mechanism helps chemists predict the rate of reaction and the conditions under which the reaction occurs, providing insights into the overall chemical behavior.
추천 영상:
가이드 코스
03:06
Reaction Mechanism Overview
관련 실천
교과서 질문
The relative rates of the reaction A + B S AB in vessels (1)–(3) are 4:4:1. Red spheres represent A molecules, and blue spheres represent B molecules. (1)-(3)

(a) What is the order of the reaction in A and B?
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교과서 질문
The following pictures represent the progress of a reaction in which two A molecules combine to give a more complex molecule A2, 2 AS A2.

(b) What is the rate law?
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교과서 질문

Consider a reaction that occurs by the following mechanism:

A + BC → AC + B

AC + D → A + CD

The potential energy profile for this reaction is as follows:

(b) Write structural formulas for all species present at reaction stages 1–5. Identify each species as a reactant, product, catalyst, intermediate, or transition state.

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교과서 질문

Consider a reaction that occurs by the following mechanism:

A + BC → AC + B

AC + D → A + CD

The potential energy profile for this reaction is as follows:

(c) Which of the two steps in the mechanism is the rate-determining step? Write the rate law for the overall reaction.

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교과서 질문

The following pictures represent the progress of the reaction AS B in which A molecules (red spheres) are converted to B molecules (blue spheres).

(c) Suppose that each sphere represents 6.0⨉1021 molecules and that the volume of the container is 1.0 L. What is the rate constant for the reaction in the usual units?

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교과서 질문

The following pictures represent the progress of the reaction AS B in which A molecules (red spheres) are converted to B molecules (blue spheres).

(b) Draw a picture that shows the number of A and B molecules present at t = 3 min.

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