Headspace CO₂ pressure
Temperature
Gas release rate k
Open cap
Seal & re-pressurise
Shake
k
H
(T) =
mol/(L·atm)
Equilibrium C
eq
= k
H
·p =
g/L
Dissolved C now =
g/L
Gas released =
mL CO₂ (at 1 atm, T)
Independent check
...
Equations
C
eq
= k
H
(T)·p, k
H
(T) = k
H
°·exp[d(1/T − 1/298.15)], k
H
°=0.034 mol/(L·atm), d=2400 K, M=44.01 g/mol.
dC/dt = −k(C − C
eq
): relaxation toward equilibrium.