Taylor asked in Science & MathematicsChemistry · 7 years ago

# Name conditions at STP?

Pressure (in atm, kPa, and mmHg)

Volume (in Liters)

Number of particles

Thank you!

Relevance
• Dr W
Lv 7
7 years ago

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

.. Volume

are NOT defined in "STP"

*******

however... all that said.. this link

http://en.wikipedia.org/wiki/Standard_temperature_...

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

• 7 years ago

STP is

Standard

Temperature

and Pressure.

It is also

referred as

NTP or Normal

Temperature

and Pressure.

Conditions:

Temperature

= 0 degrees

Celcius or 273

Kelvin

Pressure = 1

Atmospheric

Pressure or

760 torr