Chapter 6.7, Problem 18P

Interpretation Introduction

(a)

Interpretation: Each reaction is to be labeled as endothermic or exothermic.

Concept introduction: The chemical reaction in which energy is released during the formation of products is known as exothermic reactions. The energy released during the reaction is denoted by $\Delta H°$. Exothermic and endothermic reactions are opposite to each other.

Interpretation Introduction

(b)

Interpretation: The faster reaction is to be identified.

Concept introduction: The activation energy $\left(E_{\text{a}}\right)$ aids in determining the rate of the chemical reactions. The small value of $E_{\text{a}}$ exhibits that less energy is required to convert the reactants into products.It increases the rate of reaction.

Interpretation Introduction

(c)

Interpretation: The reaction which generates the product lower in energy is to be identified.

Concept introduction: The activation energy $\left(E_{\text{a}}\right)$ aids in determining the rate of the chemical reactions. The small value of $E_{\text{a}}$ exhibits that less energy is required to convert the reactants into products. It increases the rate of reaction. In the faster reactions, the product is generated with low energy.

Interpretation Introduction

(d)

Interpretation: The point in energy level diagrams which corresponds to the transition state is to be identified.

Concept introduction: The transition state is formed during the conversion of reactants into products in the chemical reaction. In an energy level diagram, it corresponds to the high potential energy along the y-axis.

Interpretation Introduction

(e)

Interpretation: The activation energy id to be labeled for each reaction.

Concept introduction: The activation energy $\left(E_{\text{a}}\right)$ aids in determining the rate of the chemical reactions. The small value of $E_{\text{a}}$ exhibits that less energy is required to convert the reactants into products. It increases the rate of reaction.

Interpretation Introduction

(f)

Interpretation: The change in enthalpy $\left(\Delta H°\right)$ for each reaction is to be labeled.

Concept introduction: The chemical reaction in which energy is released during the formation of products is known as exothermic reactions. The energy released during the reaction is denoted by $\Delta H°$. Exothermic and endothermic reactions are opposite to each other.