# How can I calculate the gas law constant?

##### 1 Answer

May 25, 2014

The ideal gas law uses the formula PV = nRT where P is the pressure in atmospheres (atm), V is the volume in liters (L), n is the number of moles (mol) and T is the temperature in kelvin (K).

If we set up the ideal gas law for the values of 1 mole at Standard temperature and pressure (STP) and calculate for the value of the constant R, we can determine the value of the ideal gas law constant.

P = 1 atm

V = 22.4 L (Avogadro's number)

n = 1 mol

R = Constant

T = 273 K (0 C)

Isolating the R value the equation is

I hope this was helpful.

SMARTERTEACHER