Vaporization can be defined as the process in which the liquid state changes into the vapor state. As a result of an increase in temperature, the kinetic energy of the molecules increases. Due to the increases in kinetic energy, the force of attraction between the molecules reduces. As a result, they escape into the surrounding in the form of vapors. This process involves the consumption of heat energy. It can be divided into two types.
Evaporation is different from boiling on the basis that evaporation is a surface phenomenon, unlike boiling which is a bulk phenomenon.
Factor affecting Vaporization
- Temperature: Vaporization is directly proportional to temperature. As the temperature rises the kinetic energy of the molecules also increases. As a result, the force of attraction reduces. Hence, with an increase in temperature the rate of evaporation increases.
- Surface area: With the increase in surface area, the rate of vaporization also increases as more particles are exposed to the change in temperature.
- Pressure: Pressure is inversely propositional to evaporation. As pressure increases, it gets difficult for the particles to gain the required kinetic energy and escape.
- Wind speed: With an increase in wind speed, the rate also increases as particles are driven away by the wind.
Difference Between Evaporation and Vaporization
|It is the phenomenon of change of a solid or a liquid into vapors at a fixed temperature and a fixed pressure.||Evaporation is nothing but a type of vaporization which mostly occurs at temperatures below the boiling point.|
|It is a fast and vigorous process.||Evaporation is a slow and silent process.|
|The temperature during vaporization remains constant.||The temperature during evaporation might change. Evaporation can occur at any temperature below the boiling point of the liquid.|
|The process of vaporization doesn’t depend on external factors.||Evaporation depends on factors like surface area, temperature, humidity, and wind speed.|
|It is a bulk phenomenon that means the process of vaporization takes place over the entire mass of the liquid.||It is a surface phenomenon that means it occurs only on the surface of the liquid.|