How much volume of CO2 (L) does a 50 lbs CO2 tank produce at atmospheric pressure?

Question

How much volume of CO2 (L) does a 50 lbs CO2 tank produce at atmospheric pressure?

Answer 1

It depends on the pressure of the CO2 inside the tank.  

Example:

at 2,000 psi = 136 atm

50 lbs CO2 is 22.7 kg = 516 moles

PV = nRT ( for CO2 it is a good approximation)

R = 0.0820 L·atm·K^-1·mo^l-1

Temp = 300K

PV = 516 * 300 * 0.082 = 12,700 L*atm

V@136 atm = 93.3 L

V@1 atm = 12,700 L

This is approximate, because CO2 is not an ideal gas.

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