The percentage of molecules at 100 o C having enough energy to surmount an energy barrier of 15 kJ/mol is to be estimated using figure 8-5 . Concept introduction: The percentage of molecules with sufficient energy decreases as the size of the energy barrier increases; the percentage of molecules that are able to surmount the energy barrier decreases by a factor of ∼ 20 . As the temperature increases, the percentage also increases.

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Chapter 8, Problem 8.9YT

(a)

Interpretation Introduction

Interpretation:

The percentage of molecules at 100 oC having enough energy to surmount an energy barrier of 15 kJ/mol is to be estimated using figure 8-5.

Concept introduction:

The percentage of molecules with sufficient energy decreases as the size of the energy barrier increases; the percentage of molecules that are able to surmount the energy barrier decreases by a factor of ∼20. As the temperature increases, the percentage also increases.

(b)

Interpretation Introduction

Interpretation:

The percentage of molecules at 100 oC having enough energy to surmount an energy barrier of 25 kJ/mol is to be estimated using figure 8-5.

Concept introduction:

The percentage of molecules with sufficient energy decreases as the size of the energy barrier increases; the percentage of molecules that are able to surmount the energy barrier decreases by a factor of ∼20. As the temperature increases, the percentage also increases.

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