Normalihöyrystymispiste

Normalihöyrystymispiste, also known as the normal boiling point, is the temperature at which a liquid boils under standard atmospheric pressure. Standard atmospheric pressure is defined as 1 atmosphere (atm), which is equivalent to 101,325 pascals (Pa) or 760 millimeters of mercury (mmHg).

At the normal boiling point, the vapor pressure of the liquid is equal to the surrounding atmospheric pressure. This allows bubbles of vapor to form within the bulk of the liquid and rise to the surface, a process characteristic of boiling. If the external pressure is lower than standard atmospheric pressure, the boiling point will be lower. Conversely, if the external pressure is higher than standard atmospheric pressure, the boiling point will be higher.

The normal boiling point is a physical property that is unique to each pure substance. For example, the normal boiling point of water is 100 degrees Celsius (212 degrees Fahrenheit). The normal boiling point of ethanol is approximately 78.37 degrees Celsius (173.07 degrees Fahrenheit). This property is often used in the identification and characterization of chemical compounds. It is also an important factor in various industrial processes, such as distillation, where substances are separated based on their different boiling points. Understanding the normal boiling point helps in controlling and optimizing these processes.