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Ch.14 - Chemical Kinetics
Tro - Chemistry: A Molecular Approach 4th Edition
Tro4th EditionChemistry: A Molecular ApproachISBN: 9780134112831당신이 사용하는 게 아니라요?교과서 변경
모든 교과서Tro 4th EditionCh.14 - Chemical Kinetics문제 39a
14장, 문제 39a

A reaction in which A, B, and C react to form products is first order in A, second order in B, and zero order in C.
a. Write a rate law for the reaction.

검증된 단계별 안내
1
Identify the order of reaction with respect to each reactant: first order in A, second order in B, and zero order in C.
Recall that the rate law for a reaction is expressed as: \( \text{Rate} = k[A]^m[B]^n[C]^p \), where \( k \) is the rate constant, and \( m, n, \) and \( p \) are the orders of the reaction with respect to A, B, and C, respectively.
Substitute the given orders into the rate law expression: \( m = 1 \), \( n = 2 \), and \( p = 0 \).
Write the rate law using the substituted values: \( \text{Rate} = k[A]^1[B]^2[C]^0 \).
Simplify the rate law expression, noting that any term raised to the power of zero is equal to one: \( \text{Rate} = k[A][B]^2 \).

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주요 개념

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

Rate Law

The rate law of a chemical reaction expresses the relationship between the rate of the reaction and the concentration of its reactants. It is typically formulated as rate = k[A]^m[B]^n[C]^p, where k is the rate constant, and m, n, and p are the orders of the reaction with respect to each reactant. The orders indicate how the rate is affected by changes in concentration.
추천 영상:
가이드 코스
01:52
Rate Law Fundamentals

Order of Reaction

The order of a reaction refers to the power to which the concentration of a reactant is raised in the rate law. It can be determined experimentally and indicates how the rate of reaction changes with varying concentrations. For example, a first-order reaction in A means that doubling the concentration of A will double the reaction rate, while a second-order reaction in B means that doubling B will quadruple the rate.
추천 영상:
가이드 코스
00:36
Average Bond Order

Zero-Order Reactions

In a zero-order reaction, the rate of reaction is constant and does not depend on the concentration of the reactant. This means that changes in the concentration of the zero-order reactant (in this case, C) have no effect on the reaction rate. Zero-order behavior often occurs when a reactant is saturated or when the reaction is limited by a factor other than concentration.
추천 영상:
가이드 코스
02:44
Zero-Order Reactions
관련 실천
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