Chapter 7, Problem 145SAE

Interpretation Introduction

(a)

Interpretation:

The balanced chemical equation for the formation of ${\text{N}}_{\text{2}}\text{O}\left(g\right)$ needs to be determined.

Concept introduction:

The enthalpy of reaction can be calculated using the following relation.

$\Delta H_{rxn}={\displaystyle \sum n_p\Delta H_f\left(\text{products}\right)-{\displaystyle \sum n_r\Delta H_f\left(\text{reactants}\right)}}$

Here, $\Delta H_f\left(\text{products}\right)$ is change in enthalpy of formation of product, $n_p$ is number of moles of product, $\Delta H_f\left(\text{reactants}\right)$ is change in enthalpy of formation of reactant and $n_r$ is number of moles of reactant.

Interpretation Introduction

(b)

Interpretation:

The balanced chemical equation for the formation of ${\text{SO}}_{\text{2}}{\text{Cl}}_{\text{2}}\left(l\right)$ needs to be determined.

Concept introduction:

The enthalpy of reaction can be calculated using the following relation.

$\Delta H_{rxn}={\displaystyle \sum n_p\Delta H_f\left(\text{products}\right)-{\displaystyle \sum n_r\Delta H_f\left(\text{reactants}\right)}}$

Here, $\Delta H_f\left(\text{products}\right)$ is change in enthalpy of formation of product, $n_p$ is number of moles of product, $\Delta H_f\left(\text{reactants}\right)$ is change in enthalpy of formation of reactant and $n_r$ is number of moles of reactant.

Interpretation Introduction

(c)

Interpretation:

The balanced chemical equation for the formation of ${\text{CH}}_{\text{3}}{\text{CH}}_{\text{2}}\text{COOH}\left(l\right)$ needs to be determined.

Concept introduction:

The enthalpy of reaction can be calculated using the following relation.

$\Delta H_{rxn}={\displaystyle \sum n_p\Delta H_f\left(\text{products}\right)-{\displaystyle \sum n_r\Delta H_f\left(\text{reactants}\right)}}$

Here, $\Delta H_f\left(\text{products}\right)$ is change in enthalpy of formation of product, $n_p$ is number of moles of product, $\Delta H_f\left(\text{reactants}\right)$ is change in enthalpy of formation of reactant and $n_r$ is number of moles of reactant.