<P> As a general trend , vapor pressures of liquids at ambient temperatures increase with decreasing boiling points . This is illustrated in the vapor pressure chart ( see right ) that shows graphs of the vapor pressures versus temperatures for a variety of liquids . At the normal boiling point of a liquid , the vapor pressure is equal to the standard atmospheric pressure defined as 1 atmosphere ( 760 Torr or 101 325 kPa ) . </P>
<P> As a general trend , vapor pressures of liquids at ambient temperatures increase with decreasing boiling points . This is illustrated in the vapor pressure chart ( see right ) that shows graphs of the vapor pressures versus temperatures for a variety of liquids . At the normal boiling point of a liquid , the vapor pressure is equal to the standard atmospheric pressure defined as 1 atmosphere ( 760 Torr or 101 325 kPa ) . </P>
the temperature at which the vapor pressure of a liquid is equal to 1 atm
the temperature at which the vapor pressure of a liquid is equal to 1 atm
the normal boiling point of a liquid
the normal boiling point of a liquid