Chapter 11.1, Problem 9LC

(a)

Interpretation Introduction

Interpretation: To determine the skeleton equation for the given reaction.

Concept Introduction: A skeleton equation would be a technique for identifying the substances involved in a chemical reaction through formulas. It will be fundamentally the same as a word equation.

Answer to Problem 9LC

The skeleton reaction will be :

  $\text{CuS}\left(\text{s}\right){\text{+O}}_{\text{2}}\left(\text{g}\right)\to \text{Cu}\left(\text{s}\right)\text{+}{\text{SO}}_{\text{2}}\left(g\right)$

Explanation of Solution

When copper sulfide reacts with oxygen then it will form $\text{Cu}$ and sulphur dioxide.

The skeleton reaction can be expressed as:

  $\text{CuS}\left(\text{s}\right){\text{+O}}_{\text{2}}\left(\text{g}\right)\to \text{Cu}\left(\text{s}\right)\text{+}{\text{SO}}_{\text{2}}\left(g\right)$

(b)

Interpretation Introduction

Interpretation: To determine the skeleton equation for the given reaction.

Concept Introduction: A skeleton equation would be a technique for identifying the substances involved in a chemical reaction through formulas. It will be fundamentally the same as a word equation.

Answer to Problem 9LC

The skeleton reaction will be :

  ${\text{2NaHCO}}_{\text{3}}\to {\text{Na}}_{\text{2}}{\text{CO}}_{\text{3}}\text{+}{\text{CO}}_{\text{2}}{\text{+H}}_{\text{2}}\text{O}$

Explanation of Solution

When sodium bi-carbonate is heated then it will break into sodium carbonate, sodium carbonate and water.

The skeleton reaction can be expressed as:

  ${\text{2NaHCO}}_{\text{3}}\to {\text{Na}}_{\text{2}}{\text{CO}}_{\text{3}}\text{+}{\text{CO}}_{\text{2}}{\text{+H}}_{\text{2}}\text{O}$