Is it true that at the same pressure, the boiling point of water is equal to the condensing temperature of steam?

Is it true that at the same pressure, the boiling point of water is equal to the condensing temperature of steam?

• A. True
• B. False
• C. Only at certain altitudes
• D. Only in a vacuum

Answer: (A)

The statement is true because boiling and condensing are two processes that occur at the same temperature when the pressure remains constant. When water boils, it transitions from the liquid phase to the gas phase (steam), and this occurs at the boiling point. Conversely, when steam condenses, it changes from the gas phase back to the liquid phase, which also occurs at the condensing temperature. At a given pressure, the boiling point of water is the temperature at which it transitions to steam, while the condensing temperature of steam is the same temperature at which steam turns back into water. Thus, under consistent pressure conditions, the temperature at which water boils and the temperature at which steam condenses are equivalent. This principle holds true across various pressures, including standard atmospheric pressure.

The statement is true because boiling and condensing are two processes that occur at the same temperature when the pressure remains constant. When water boils, it transitions from the liquid phase to the gas phase (steam), and this occurs at the boiling point. Conversely, when steam condenses, it changes from the gas phase back to the liquid phase, which also occurs at the condensing temperature.

At a given pressure, the boiling point of water is the temperature at which it transitions to steam, while the condensing temperature of steam is the same temperature at which steam turns back into water. Thus, under consistent pressure conditions, the temperature at which water boils and the temperature at which steam condenses are equivalent. This principle holds true across various pressures, including standard atmospheric pressure.