Chapter 20, Problem 99SAE

Interpretation Introduction

(a)

Interpretation:

The method of initial rates should be described.

Concept introduction:

Method of initial rates is related to the rate law.

Interpretation Introduction

(b)

Interpretation:

The activated complex should be described.

Concept introduction:

Activated complex is related to the transition state of reaction.

Interpretation Introduction

(c)

Interpretation:

Reaction mechanism should be described.

Concept introduction:

Reaction mechanism is used to depict all the intermediates involved in the reaction that does not appear in the final or overall reaction.

Interpretation Introduction

(d)

Interpretation:

Heterogeneous catalyst should be described.

Concept introduction:

A substance that alters (increases or decreases) the rate of reaction by lowering or increasing the activation energy respectively, but it does not itself get consumed in the reaction is called a catalyst. A catalyst can be heterogeneous or homogenous. A heterogeneous catalyst is used in the hydrogenation of alkenes.

Interpretation Introduction

(e)

Interpretation:

Rate-determining step should be described.

Concept introduction:

Rate-determining step is used to determine the rate expression for the reaction.