How is the gas equation PV=nRt related to STP?

Question

does the R represent STP and acts as a "reference" for all gases

Answer 1

if you noted well in your definitions, every definition start with at standard temp / pressure/ volume.

Answer 2

No.  R is a constant.  Its value depends on the units of measure.

STP is an abbreviation of "standard temperature and pressure".  Usually that means 1 atmosphere and "room temperature".  I've forgotten what the conventions are for the "standard" T.  It is arbitrary, but usually understood and should be available.  Note that STP does not define the gravitational field, the electromagnetic (etc) field, nor the gasses, solids and liquids present.  For may purpose it is assumed that it is Earth's atmosphere at sea level and with negligible fields (other than 1 G).

Answer 3

R is the universal gas constant. It has applications in the theory of ideal gases (and far beyond it), and does not depend on any particular temperature or pressure.

STP simply means one atmosphere pressure, 0 Celsius.

In a lifetime in chemistry, I never used STP beyond introductory chemistry.  Anything you can to with STP, you can do at least as easily with

PV = nRT

Moreover, 25 Celsius, not 0 Celsius, is what is used as the "standard state" in chemical energy calculations.

For these reasons, I don't understand why schools continue to teach STP at all.  You can show this answer to your teacher, and see what he/she thinks about it.

Answer 4

STP stands for Standard Temperature and Pressure which is 273 K (Kelvin) or 0 degrees C and 1atm pressure. R is actually the universal gas constant R = 8.314 J · K-1 · mol (this number varies a little bit depending on sources and the units it appears in) and n is the number of moles - generally this is 1 and can be ignored in simplistic equations. So when an equation says it is at STP you just use the standard temp and pressure to figure out PV=nRT.

Check out the source below for how to solve problems using the Ideal Gas Law.