Chapter 16, Problem 16.13P

(a)

Interpretation Introduction

Interpretation: The average rate from $\text{8}\text{.0}\text{to}\text{20}\text{.0}\text{sec}$ has to be determined.

Concept introduction:

Relative rates and stoichiometry: During a chemical reaction, amounts of reactant decrease with time and amounts of products increases.

$\text{Reaction Rate}\text{ = - }\frac{\text{1}}{\text{coefficient}}\frac{\text{Δ[reactants]}}{\text{Δt}}\text{ = +}\frac{\text{1}}{\text{coefficient}}\frac{\text{Δ[products]}}{\text{Δt}}$

(b)

Interpretation Introduction

Interpretation: The rate at $\text{5}\text{.0}\text{sec}$ has to be determined using graphical methods.

Concept introduction:

Relative rates and stoichiometry: During a chemical reaction, amounts of reactant decrease with time and amounts of products increases.

$\text{Reaction Rate}\text{ = - }\frac{\text{1}}{\text{coefficient}}\frac{\text{Δ[reactants]}}{\text{Δt}}\text{ = +}\frac{\text{1}}{\text{coefficient}}\frac{\text{Δ[products]}}{\text{Δt}}$