The normal boiling point occurs when the
A. intermolecular forces within the liquid phase are broken.
B. temperature of the pure liquid equals the external temperature.
C. vapor pressure of a pure liquid equals an external pressure of one atmosphere.
D. vapor pressure of the liquid equals the external pressure.
Answer:C
The normal boiling point occurs when the
A. intermolecular forces within the liquid phase are broken. B. temperature of the pure liquid equals the external temperature. C. vapor pressure of a pure liquid equals an external pressure of one atmosphere. D. vapor pressure of the liquid equals the external pressure.