Chapter 13, Problem 45A

Interpretation Introduction

Interpretation: The possibility of dynamic equilibrium in an open container is to be determined.

Concept introduction:

When a reaction is reversible, a dynamic equilibrium occurs. Since substances shift from reactants to products at identical rates, there is no net change. The formation of reactants and products occurs so quickly that neither of their concentrations changes.

Answer to Problem 45A

A dynamic equilibrium can't exist in an open container.

Explanation of Solution

In dynamic equilibrium at the molecular level, the rate at which the liquid evaporates is the same as the rate at which the vapor condenses. In an open container, when evaporation occurs, the molecules escape into the atmosphere and so condensation is possible.

Thus, dynamic equilibrium does not possible in an open container.