Name conditions at STP?
Pressure (in atm, kPa, and mmHg)
Volume (in Liters)
Number of particles
- Dr WLv 77 years agoFavorite Answer
if you're taking a chemistry class in the US, STP (Standard Temperature and Pressure) usually means
.. T = 273.15K = 0°C
.. P = 1atm = 101.325kPa = 760mmHg
the other variables
.. # of particles
are NOT defined in "STP"
however... all that said.. this link
shows the current IUPAC and NIST definitions of STP... and some others as well
note that IUPAC has changed definitions, while NIST has not
to the other guy who doesn't know what he's talking about
NTP.. normal temperature and pressure... refers to
.. T = 293.15K = 20°C
.. P = 1atm = 760mmHg = 101.325kPa
note the difference...
.. T is not the same.. it's closer to "room temperature"
.. P is the NIST definition.. not the IUPAC definition
- Kajola GbengaLv 57 years ago
It is also
NTP or Normal
= 0 degrees
Celcius or 273
Pressure = 1