Interpretation: The processes occurring at the molecular level in dynamic equilibrium are to be explained.
Concept introduction:
A liquid is a nearly incompressible fluid and has the shape of its container and maintains a (almost) constant volume under all conditions of pressure. The volume is fixed if the temperature and pressure are both constant.
Answer to Problem 43A
The rate of evaporation and condensation become equal in dynamic equilibrium.
Explanation of Solution
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.
Thus, 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.
Chapter 13 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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