Chapter 9, Problem 86A

Interpretation Introduction

(a)

Interpretation:

The chemical equation for the combustion of solid barium needs to be explained.

Concept introduction:

In combustion reaction, a substance combine with oxygen and release energy in form of heat.

Answer to Problem 86A

The chemical equation is as follows:

${\text{2Ba+O}}_{\text{2}}\to 2\text{BaO}$

Explanation of Solution

Solid Barium reacts with oxygen to produce barium oxide. The reaction is as follows:

${\text{2Ba+O}}_{\text{2}}\to 2\text{BaO}$

In combustion reaction reactant combined with Oxygen. The above reaction is a combustion reaction because reactant combined with Oxygen. As the number of atoms participate in the reaction that is in both reactant and product side is equal. Therefore, the chemical equation is balanced.

Interpretation Introduction

(b)

Interpretation:

The chemical equation for the combustion of solid boron needs to be determined.

Concept introduction:

In combustion reaction, a substance combines with oxygen and release energy in form of heat.

Answer to Problem 86A

The chemical equation is as follows:

${\text{4B+3O}}_{\text{2}}\to 2{\text{B}}_2{\text{O}}_3$

Explanation of Solution

Solid Boron reacts with oxygen to produce diboron trioxide. The reaction is as follows:

${\text{4B+3O}}_{\text{2}}\to 2{\text{B}}_2{\text{O}}_3$

In combustion reaction reactant combined with Oxygen. The above reaction is a combustion reaction because reactant combined with Oxygen. As the number of atoms participate in the reaction that is in both reactant and product side is equal. Therefore, the chemical equation is balanced.

Interpretation Introduction

(c)

Interpretation:

The chemical equation for the combustion of liquid acetone needs to be determined.

Concept introduction:

In combustion reaction, a substance combines with oxygen and release energy in form of heat.

Answer to Problem 86A

The chemical equation is as follows:

${\text{C}}_3{\text{H}}_6{\text{O +4O}}_{\text{2}}\to 3{\text{CO}}_{\text{2}}{\text{+3H}}_{\text{2}}\text{O}$

Explanation of Solution

Liquid acetone reacts with oxygen to produce carbon dioxide gas and water. The reaction is as follows:

${\text{C}}_3{\text{H}}_6{\text{O +4O}}_{\text{2}}\to 3{\text{CO}}_{\text{2}}{\text{+3H}}_{\text{2}}\text{O}$

In combustion reaction reactant combined with Oxygen. The above reaction is a combustion reaction because reactant combined with Oxygen. As the number of atoms participate in the reaction that is in both reactant and product side is equal. Therefore, the chemical equation is balanced.

Interpretation Introduction

(d)

Interpretation:

The chemical equation for the combustion of liquid octane needs to be determined.

Concept introduction:

In combustion reaction, a substance combines with oxygen and release energy in form of heat.

Answer to Problem 86A

The chemical equation is as follows:

${\text{2C}}_8{\text{H}}_{18}{\text{ +25O}}_{\text{2}}\to 16{\text{CO}}_{\text{2}}{\text{+18H}}_{\text{2}}\text{O}$

Explanation of Solution

Liquid octane reacts with oxygen to produce carbon dioxide gas and water. The reaction is given below:

${\text{2C}}_8{\text{H}}_{18}{\text{ +25O}}_{\text{2}}\to 16{\text{CO}}_{\text{2}}{\text{+18H}}_{\text{2}}\text{O}$

In combustion reaction reactant combined with Oxygen. The above reaction is a combustion reaction because reactant combined with Oxygen. As the number of atoms participate in the reaction that is in both reactant and product side is equal. Therefore, the chemical equation is balanced.