Physical and chemical properties of liquid ammonia
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I read in the information that the boiling point of liquid ammonia is -33 degrees Celsius. I’m not quite sure about this – does it mean that at normal pressure, liquid ammonia begins to vaporize when the temperature is above -33 degrees Celsius? Is that what it means? Please everyone share your thoughts
The boiling point is the temperature at which a liquid boils; boiling and evaporation are two forms of vaporization. The boiling point you mentioned refers to boiling at standard pressure.
The third floor is correct. The boiling point refers to the temperature at which a liquid boils under standard atmospheric pressure; it is a state where gas and liquid coexist. At a temperature higher than the boiling point under standard atmospheric pressure, the liquid exists in gaseous form, rather than starting to vaporize
Does that mean that at normal pressure, there is no liquid ammonia above its boiling point?