Chapter 9, Problem 68A

Interpretation Introduction

(a)

Interpretation:

The skeleton equation for the given reaction is to be written.

$\text{Sodium}\text{carbonate}\left(s\right)\to \text{Sodium}\text{oxide}\left(s\right)+\text{carbon}\text{dioxide}\left(g\right)$

Concept introduction:

Chemical equation is the symbolic description of a chemical reaction that products and reactants are indicating in terms of their chemical formula.

Answer to Problem 68A

The skeleton equation is as follows:

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

Explanation of Solution

The given equation is as follows:

$\text{Sodium}\text{carbonate}\left(s\right)\to \text{Sodium}\text{oxide}\left(s\right)+\text{carbon}\text{dioxide}\left(g\right)$

For the above word equation dissociation of solid sodium carbonate gives solid sodium oxide and carbon dioxide gas. Given word equation is already broken down into desired format. Thus the skeleton equation is as follows:

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

(b)

Interpretation Introduction

Interpretation:

The skeleton equation for the given reaction needs to be determined.

$\text{aluminium}\left(s\right)+\text{iodine}\left(s\right)\to \text{aluminium}\text{iodide}\left(s\right)$

Concept introduction:

Chemical equation is the symbolic description of a chemical reaction that products and reactants are indicating in terms of their chemical formula.

Answer to Problem 68A

The skeleton equation is as follows:

$\text{Al}\left(s\right)+{\text{I}}_{\text{2}}\left(s\right)\to \text{AlI}\left(s\right)$

Explanation of Solution

The given equation is as follows:

$\text{aluminum}\left(s\right)+\text{iodine}\left(s\right)\to \text{aluminum}\text{iodide}\left(s\right)$

For the above word equation solid aluminum reacts with solid iodine and produce solid aluminum iodide. Given word equation is already broken down into desired format. Thus the skeleton equation is as follows:

$\text{Al}\left(s\right)+{\text{I}}_{\text{2}}\left(s\right)\to \text{AlI}\left(s\right)$

(c)

Interpretation Introduction

Interpretation:

The skeleton equation for the given reaction needs to be determined.

$\text{Iron}\left(\text{II}\right)\text{oxide}\left(s\right)+\text{oxygen}\left(g\right)\to \text{Iron}\left(\text{III}\right)\text{oxide}\left(s\right)$

Concept introduction:

Chemical equation is the symbolic description of a chemical reaction that products and reactants are indicating in terms of their chemical formula.

Answer to Problem 68A

The skeleton equation is as follows:

$\text{FeO}\left(s\right)+{\text{O}}_{\text{2}}\left(g\right)\to {\text{Fe}}_{\text{2}}{\text{O}}_3\left(s\right)$

Explanation of Solution

The given equation is as follows:

$\text{Iron}\left(\text{II}\right)\text{oxide}\left(s\right)+\text{oxygen}\left(g\right)\to \text{Iron}\left(\text{III}\right)\text{oxide}\left(s\right)$

For the above word equation solid iron (II) oxide reacts with oxygen gas and form solid iron (II) oxide. Given word equation is already broken down into desired format. Thus the skeleton equation is as follows:

$\text{FeO}\left(s\right)+{\text{O}}_{\text{2}}\left(g\right)\to {\text{Fe}}_{\text{2}}{\text{O}}_3\left(s\right)$