   # The following data were collected in two studies of the reaction 2 A + B → C + D Time (s) Experiment 1 [A] (mol/L) × 10 −2 Experiment 2 [A] (mol/L) × 10 −2 0 10.0 10.0 20. 6.67 5.00 40. 5.00 3.33 60. 4.00 2.50 80. 3.33 2.00 100. 2.86 1.67 120. 2.50 1.43 In Experiment 1, [B] 0 = 5.0 M. In Experiment 2, [B] 0 = 10.0 M. Rate = − Δ [ A ] Δ t a. Why is [B] much greater than [A]? b. Give the rate law and value for k for this reaction. ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 11, Problem 109CP
Textbook Problem
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## The following data were collected in two studies of the reaction 2 A + B → C + D Time (s) Experiment 1 [A] (mol/L) × 10−2 Experiment 2 [A] (mol/L) × 10−2 0 10.0 10.0 20. 6.67 5.00 40. 5.00 3.33 60. 4.00 2.50 80. 3.33 2.00 100. 2.86 1.67 120. 2.50 1.43 In Experiment 1, [B]0 = 5.0 M.In Experiment 2, [B]0 = 10.0 M. Rate = − Δ [ A ] Δ t a. Why is [B] much greater than [A]?b. Give the rate law and value for k for this reaction.

(a)

Interpretation Introduction

Interpretation: The rate law and the rate constant of the given reaction is to be determined; also the reason for higher concentration of B as compared to A is to be determined.

Concept Introduction: The rate law for the given reaction gives the dependence of rate of the reaction on the concentration of various reactants present in the reaction medium.

To determine: The reason for higher concentration of B in comparison to A vin the given reaction.

### Explanation of Solution

Explanation

Given

The balanced chemical equation for the given reaction is,

2A+BC+D

The initial concentration of reactant A in experiment 1 and 2 is 10.0×102M .

The initial concentration of reactant B in experiment 1 is 5

(b)

Interpretation Introduction

Interpretation: The rate law and the rate constant of the given reaction is to be determined; also the reason for higher concentration of B as compared to A is to be determined.

Concept Introduction: The rate law for the given reaction gives the dependence of rate of the reaction on the concentration of various reactants present in the reaction medium.

To determine: The rate law and rate constant of the given reaction.

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