Chapter 5, Problem 38QP

(a)

Interpretation Introduction

Interpretation:

The balanced chemical equation for the given skeleton reaction.

Explanation of Solution

The skeleton equation for the chemical equation is shown in (1) where, on the left side, the number of atoms is not equal to the number of atoms on the right side.

$\text{Mg}\left(s\right)+{\text{O}}_2\left(g\right)\stackrel{}{\to }\text{MgO}\left(s\right)\mathrm{......}\left(1\right)$

To balance the chemical equation, the coefficient for $\text{Mg}\left(s\right)$ and $\text{MgO}\left(s\right)$ changes to 2. The balanced chemical equation for the given reaction is shown in (2)

$\text{2Mg}\left(s\right)+{\text{O}}_2\left(g\right)\stackrel{}{\to }\text{2MgO}\left(s\right)\mathrm{......}\left(2\right)$

(b)

Interpretation Introduction

Interpretation:

The balanced chemical equation for the given skeleton reaction.

Explanation of Solution

The skeleton equation for the chemical equation is shown in (3) where, on the left side, the number of atoms is not equal to the number of atoms on the right side.

$\text{Zn}\left(s\right)+{\text{AgNO}}_3\left(aq\right)\stackrel{}{\to }\text{Zn}{\left({\text{NO}}_3\right)}_2\left(aq\right)+\text{Ag}\left(s\right)\mathrm{......}\left(3\right)$

To balance the chemical equation, the coefficient for ${\text{AgNO}}_{\text{3}}\left(aq\right)$ and $\text{Ag}\left(s\right)$  changes to $2$ . The balanced chemical equation for the given reaction is shown in (4).

$\text{Zn}\left(s\right)+2{\text{AgNO}}_3\left(aq\right)\stackrel{}{\to }\text{Zn}{\left({\text{NO}}_3\right)}_2\left(aq\right)+2\text{Ag}\left(s\right)\mathrm{......}\left(4\right)$

(c)

Interpretation Introduction

Interpretation:

The balanced chemical equation for the given skeleton reaction.

Explanation of Solution

The skeleton equation for the chemical equation is shown in (5) where, on the left side, the number of atoms is not equal to the number of atoms on the right side.

${\text{C}}_2{\text{H}}_2\left(g\right)+{\text{O}}_2\left(g\right)\stackrel{}{\to }{\text{CO}}_2\left(g\right)+{\text{H}}_2\text{O}\left(g\right)\mathrm{......}\left(5\right)$

To balance the chemical equation, the coefficient for ${\text{O}}_2\left(g\right)$ and ${\text{CO}}_2\left(g\right)$   changes to $\frac{5}{2}$ and $2$ , respectively. The balanced chemical equation for the given reaction is shown in (6)

${\text{C}}_2{\text{H}}_2\left(g\right)+\frac{5}{2}{\text{O}}_2\left(g\right)\stackrel{}{\to }{\text{2CO}}_2\left(g\right)+{\text{H}}_2\text{O}\left(g\right)\mathrm{......}\left(6\right)$

(d)

Interpretation Introduction

Interpretation:

The balanced chemical equation for the given skeleton reaction.

Explanation of Solution

The skeleton equation for the chemical equation is shown in (7) where, on the left side, the number of atoms is not equal to the number of atoms on the right side.

${\text{C}}_{12}{\text{H}}_{22}{\text{O}}_{11}\left(s\right)+{\text{KClO}}_3\left(l\right)\stackrel{}{\to }{\text{CO}}_2\left(g\right)+{\text{H}}_2\text{O}\left(g\right)+\text{KCl}\left(s\right)\mathrm{......}\left(7\right)$

To balance the chemical equation, the coefficient for ${\text{KClO}}_3\left(l\right)$ , ${\text{CO}}_2\left(g\right)$ , ${\text{H}}_{\text{2}}\text{O}\left(g\right)$ ,and $\text{KCl}\left(s\right)$ changes to $8$ , $12$ , $11$ , and $8$ , respectively. The balanced chemical equation for the given reaction is shown in (8)

${\text{C}}_{12}{\text{H}}_{22}{\text{O}}_{11}\left(s\right)+8{\text{KClO}}_3\left(l\right)\stackrel{}{\to }{\text{12CO}}_2\left(g\right)+11{\text{H}}_2\text{O}\left(g\right)+8\text{KCl}\left(s\right)\mathrm{......}\left(8\right)$