Chapter 12, Problem 39A

(a)

Interpretation Introduction

Interpretation: The chemical equation in terms of interacting particles is to be interpreted.

Concept Introduction: Reactants, products, and an arrow indicating the reaction's direction make up a chemical equation. A balanced chemical equation is one in which the number of atoms in each of the molecules is the same on both sides of the equation.

Answer to Problem 39A

The interacting particles are three molecules of ${\text{KClO}}_{\text{3}}$ , two molecules of $\text{KCl}$ , and three molecules of ${\text{O}}_{\text{2}}$ .

Explanation of Solution

The interacting particles are the molecules of reactants and products taking place in a chemical equation.

Consider the given chemical equation as follows:

  $2{\text{KClO}}_{\text{3}}\left(s\right) \to 2\text{KCl}\left(s\right)+3{\text{O}}_{\text{2}}\left(g\right)$

The three molecules of ${\text{KClO}}_{\text{3}}$ decomposes to give two molecules of $\text{KCl}$ and three molecules of ${\text{O}}_{\text{2}}$ .

(b)

Interpretation Introduction

Interpretation: The chemical equation in terms of interacting particles is to be interpreted.

Concept Introduction: Reactants, products, and an arrow indicating the reaction's direction make up a chemical equation. A balanced chemical equation is one in which the number of atoms in each of the molecules is the same on both sides of the equation.

Answer to Problem 39A

The interacting particles are four molecules of ${\text{NH}}_{\text{3}}$ , six molecules of $\text{NO}$ , five molecules of ${\text{N}}_{\text{2}}$ , and six molecules of ${\text{H}}_{\text{2}}\text{O}$ .

Explanation of Solution

The interacting particles are the molecules of reactants and products taking place in a chemical equation.

Consider the given chemical equation as follows:

  $4{\text{NH}}_{\text{3}}\left(g\right)+6\text{NO}\left(g\right) \to 5{\text{N}}_{\text{2}}\left(g\right)+6{\text{H}}_{\text{2}}\text{O}\left(g\right)$

The reaction between four molecules of ${\text{NH}}_{\text{3}}$ and six molecules of $\text{NO}$ gives five molecules of ${\text{N}}_{\text{2}}$ and six molecules of ${\text{H}}_{\text{2}}\text{O}$ .

(c)

Interpretation Introduction

Interpretation: The chemical equation in terms of interacting particles is to be interpreted.

Concept Introduction: Reactants, products, and an arrow indicating the reaction's direction make up a chemical equation. A balanced chemical equation is one in which the number of atoms in each of the molecules is the same on both sides of the equation.

Answer to Problem 39A

The interacting particles are four atoms of $\text{K}$ , one molecule of ${\text{O}}_{\text{2}}$ and two molecules of ${\text{K}}_{\text{2}}\text{O}$ .

Explanation of Solution

The interacting particles are the molecules of reactants and products taking place in a chemical equation.

Consider the given chemical equation as follows:

  $4\text{K}\left(s\right)+{\text{O}}_{\text{2}}\left(g\right) \to 2{\text{K}}_{\text{2}}\text{O}\left(s\right)$

The four atoms of $\text{K}$ reacts with one molecule of ${\text{O}}_{\text{2}}$ to give two molecules of ${\text{K}}_{\text{2}}\text{O}$ .