Chapter 18, Problem 82A

Interpretation Introduction

Interpretation: Using the Le Chatelier principle, the carbonated drinks go flat when the left of the containers opens is to be explained.

Concept introduction: According to Le Chatelier's Principle, an equilibrium system will release stress when it is subjected to stress.

Answer to Problem 82A

According to Le Chatelier's Principle, the system attempts to replace escaped molecules. When a carbonated drink is opened, the carbon dioxide gas above the liquid tries to escape from the container. In an attempt to reestablish equilibrium, the gas bubbles out of the liquid. The process is repeated until the carbonated drinks become flat.

Explanation of Solution

Le Chatelier's Principle states that the system will make an effort to replace any molecules that have escaped. A system in dynamic equilibrium changes in response to applied stress. Carbonated drinks in sealed containers are in dynamic equilibrium between the carbon dioxide $\left({\text{CO}}_{\text{2}}\right)$ in the liquid and above the liquid.

When containers are opened, ${\text{CO}}_{\text{2}}$ gas escapes from above the liquid. In order to restore its equilibrium, the gas bubbles out of the liquid. The procedure is repeated until the carbonated drinks become flat.

Conclusion

According to Le Chatelier's Principle, the system attempts to replace escaped molecules. When a carbonated drink is opened, the carbon dioxide gas above the liquid tries to escape from the container. In an attempt to reestablish equilibrium, the gas bubbles out of the liquid. The process is repeated until the carbonated drinks become flat.