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Hamburger02
1 year ago

Are there 3 universal gas equations?

No. There is only a universal gas equation that mathematically led Èmile Clapeyron from the law of Guy-Lussac and the law of Mariotte.

It was first published in 1834 and is original:

pv = R(267 + t)

t was the Celsius temperature and (267+t) is called the absolute temperature T today. At that time, however, the absolute zero point of -273,15 °C was not known.

In this case, R was the specific gas constant, based on the mass m.

v is the specific volume, i.e. V/m

All further formulations were later derived from this basic formula. Thus, the Boltzmann constant, the absolute gas constant or the absolute zero point were “discovered” only after Clapeyron.

Spikeman197
1 year ago

p = pressure

V = volume

T = absolute temperature

n = quantity of substance in mol

R = universal gas constant (8,314 J/(mol×K)

kb=bolzman constant is like R, only for one particle, i.e. kb=R/n. Instead of the amount of material, the number of particles N is then taken.

m = mass. A specific gas constant Rs is used directly. Since m=n×M (molar mass in g/mol) is Rs=R/M (in J/(kg×K)