vfindia
Sep 26, 2009, 06:07 AM
The boiling point of anhydrous Hydrofluoric acid is around 20 Celsius.
Data shows that heat of vaporization of anhydrous HF is 7.493 kJ/mol.
How is this possible? Suppose the room temperature is 25 Celsius. Then it will automatically be converted into vapors giving out heat. Then how come heat of vaporization value is positive? Please explain.
Thank you.
Data shows that heat of vaporization of anhydrous HF is 7.493 kJ/mol.
How is this possible? Suppose the room temperature is 25 Celsius. Then it will automatically be converted into vapors giving out heat. Then how come heat of vaporization value is positive? Please explain.
Thank you.