My question relate to liquid/gas partition under varying pressure and temperature condition inside a close vessel.
I have a close vessel filled with air. Then we filled it with oil letting the air escape to atmosphere, so the air is not compressed at the end of the filling process. The oil contains a certain concentration of hydrogen.
Air is bubbled through the oil to help achieve equilibrium.
Knowing that the Oswald coefficient is about .05, the Hydrogen will part between oil and gas in a 1:20 ratio. Therefor the hydrogen will part between oil and gas according to:
H2_gas = =H2_Initial_conc/(Oswald_H2 + (gas_vol/oil_vol))
H2_gas: final concentration in gas space
H2_initial_conc: initial concentration of hydrogen dissolved in oil
Oswald: partition coefficient = 0.05, not affected by pressure or temperature or very little. So assumed constant for this problem
Gas_vol: gas volume in vessel
Oil_vol: oil volume in vessel
My question is, if I reduce the pressure inside the close vessel, before the hydrogen start to migrate from the oil to the gas space, will that change the final concentration of hydrogen from what it would be at 1 atm.? Will the final concentration change with temperature?