Chapter 16, Problem 16.169AP

Interpretation Introduction

Interpretation: The balanced chemical equations that corresponds to $\Delta H^{°}{}_{{\text{f,SO}}_2}$ and $\Delta H^{°}{}_{{\text{f,SO}}_3}$ and. the use of Hess’s law in determining $\Delta H^{°}$ for the given reaction are to be stated.

Concept introduction: The heat of formation is the amount of heat absorbed or evolved at the constant temperature.

According to the Hess’s law, the amount of heat absorbed or evolved in a chemical reaction is the same whether the reaction takes place in one or several steps.

To determine: The balanced chemical equations that corresponds to $\Delta H^{°}{}_{{\text{f,SO}}_2}$ and $\Delta H^{°}{}_{{\text{f,SO}}_3}$ and the use of Hess’s law in determining $\Delta H^{°}$ for the given reaction.