In a closed system under conditions of dynamic equilibrium, the rate of evaporation is equal to the rate of condensation. This concept is known as the equilibrium vapor pressure.

When a liquid is in a closed container, its molecules are in constant motion. Some of these molecules at the surface have enough kinetic energy to escape into the vapor phase, which is the process of evaporation. As these vapor molecules move away from the liquid surface, they can collide with other molecules in the vapor phase and may return to the liquid phase through condensation.

Over time, as more molecules evaporate and the vapor concentration increases, the rate of condensation also increases because there are more vapor molecules available to collide with and be captured by the liquid. Conversely, as more vapor molecules condense back into the liquid, the rate of evaporation decreases because there are fewer molecules left at the surface with sufficient energy to escape.

This dynamic process continues until an equilibrium is reached. At equilibrium, the rate of evaporation equals the rate of condensation, and there is no net change in the amount of liquid or vapor in the system. The pressure of the vapor in the closed system at this point is called the equilibrium vapor pressure and depends on the temperature and the properties of the liquid.

In summary, the relationship between the rate of evaporation and the rate of condensation in a closed system under conditions of dynamic equilibrium is one of equality, with no net change in the overall quantities of liquid and vapor.

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When it evaporates, it turns into water vapor and goes up into the atmosphere. This water vapor gets together with other water vapor and turns into a cloud. When clouds get dense, they drop the water back to Earth in some form of precipitation like rain, snow, hail or sleet. Evaporation and condensation are related because they are necessary for maintaining balance in nature as used in the water cycle. These are both processes of conversion of matter from one state to another and are opposite with each other where evaporation is from liquid to gas and condensation is from gas to liquid. Specifically, evaporation has something to do with water drying up or seeming to disappear. You might also know that evaporation is a process involving a change of state: Water goes from a liquid state to a gas state. Condensation is the reverse process: Water goes from a gas state to a liquid state. When the rate of condensation of the gas becomes equal to the rate of evaporation of the liquid or solid, the amount of gas, liquid and/or solid no longer changes. The gas in the container is in equilibrium with the liquid or solid. Changes of state can also be described as phase changes. Phase equilibrium is a reversible process involving phase change in which a dynamic equilibrium has been established. Solid - liquid phases may also establish equilibrium, as, in a mixture of ice and water at 0ºC. So, as the number of water vapor molecules increases in the air above the water, the condensation rate increases, too. The condensation rate will continue to increase until it matches the evaporation rate, which is a state called equilibrium, meaning the condensation rate equals the evaporation rate. This continues until panel (c), when the vapor pressure has now increased to the point where the rate of condensation has now increased to equal the rate of evaporation. In a closed system, a dynamic equilibrium will be reached, where the rate of evaporation equals the rate of condensation. The higher the temperature of the liquid water, the faster the rate of evaporation. Conversely, the rate of condensation, which is the number of water molecules that change phase from gas to liquid per second, depends mainly on the vapor pressure. The higher the vapor pressure, the faster the rate of condensation. when the rate of evaporation equals the rate of condensation, the dew point is reached, and no more water vapor can be held in the air. This means that there will be no cloud formation, and any excess water vapor will condense into liquid. If the rate of evaporation is higher than the rate of condensation, the system is in a state of dynamic equilibrium. At any temperature, evaporation and condensation are actually occurring at the same time. Faster molecules from the liquid evaporate while slower molecules from the gas condense. Depending on the conditions, one process will happen at a faster rate than the other resulting in net evaporation or net condensation. The water cycle has many parts, with the three main parts being evaporation, condensation, and precipitation. Through these processes, water changes phases from liquid to solid to gas, and back again. The Dew Point is the temperature at which water vapor starts to condense out of the air, the temperature at which air becomes completely saturated. Above this temperature the moisture will stay in the air.If you are specifically looking at the rate of condensation and the rate of evaporation, it is at the boiling point that this occurs.