   Chapter 12, Problem 29E

Chapter
Section
Textbook Problem

# The reaction 2NO ( g ) +Cl 2 ( g ) → 2NOCl ( g ) was studied at −10°C. The following results were obtained where Rate   =   − Δ [ Cl 2 ] Δ t [NO]0(mol/L) [Cl2]0(mol/L) Initial Rate (mol/L · min) 0.10 0.10 0.18 0.10 0.20 0.36 0.20 0.20 1.45 a. What is the rate law?b. What is the value of the rate constant?

(a)

Interpretation Introduction

Interpretation: A reaction between NO and Cl2 and its rate expression is given. The rate law and the value of the rate constant are to be calculated.

Concept introduction: The relation between the reaction rate and the concentration of the reactants is stated by the rate law.

Explanation

Given

The stated reaction is,

2NO(g)+Cl2(g)2NOCl(g)

The rate law for the given reaction is calculated by the expression,

Rate=k[NO]2<

(b)

Interpretation Introduction

Interpretation: A reaction between NO and Cl2 and its rate expression is given. The rate law and the value of the rate constant are to be calculated.

Concept introduction: The relation between the reaction rate and the concentration of the reactants is stated by the rate law.

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