I "figured out" something cool today in G-Chem

[dudewhensmydat]

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You guys probably know this already, but for anyone who maybe doesn't...

In G-Chem: when you multiply R (0.0821) times absolute temperature at STP conditions (273 K), the number it equals is the same as the volume a mole of gas occupies at STP = 22.4 L.

IOW: 0.0821 x 273 = 22.4

I thought this was really cool, plus it helps save time since we can't use a calculator.

 

[dat_student]

You guys probably know this already, but for anyone who maybe doesn't...

In G-Chem: when you multiply R (0.0821) times absolute temperature at STP conditions (273 K), the number it equals is the same as the volume a mole of gas occupies at STP = 22.4 L.

IOW: 0.0821 x 273 = 22.4

I thought this was really cool, plus it helps save time since we can't use a calculator.

@STP, n = 1 mole, p = 1 atm, T = 273 K, V = 22.4 L

pv = nRT
R = (pv)/(nT)
R = (1 * 22.4)/(1 * 273)
R = 22.4/273 = 0.0821 🙂