[kmlucy]

Hi all,

I have a vessel, in which a fixed volume of water is in equilibrium with 10% oxygen gas. 10% oxygen and balance nitrogen gas is continuously pumped in to the vessel.
I am interested in knowing what will be the effect on oxygen concentration if the temperature of the water is raised from 20 C to 40 C.
I know that solubility of oxygen decreases with increase in temperature.
Let's suppose that solubility decreases by 20% when water is heated from 20 c to 40 c, will the concentration of the oxygen in water decrease by 20% as well?
what equations should i use to calculate the change in oxygen concentration in water with change in temperature?     

Thanks

[Klamp]

Have a look at these links, seems to be what you are looking for

http://www.engineeringtoolbox.com/air-solubility-water-d_639.html

http://antoine.frostburg.edu/chem/senese/101/solutions/faq/predicting-DO.shtml