The process of converting one mole of liquid water at 100°C to vapor is called vaporization, and the final temperature of the water vapor remains at 100°C at standard atmospheric pressure due to the heat of vaporization.
The specific term for the process in which one mole of liquid water at 100°C is heated until it is completely converted to vapor is called vaporization. At standard atmospheric pressure, the final temperature of the water vapor will also be 100°C. This is because during the phase change from liquid to gas, the temperature remains constant as the heat energy provided is used to break the hydrogen bonds between water molecules, a concept known as the heat of vaporization.
Water has a high heat of vaporization amounting to 40.65 kJ/mol. Consequently, even after all liquid water has been converted to steam, continued heating will only raise the temperature of the steam if the water is in a closed container and not allowed to escape.
The process of converting water at its boiling point to steam is known as vaporization, and under normal conditions at atmospheric pressure, the temperature will remain at 100°C for water throughout this phase change.