dissolved oxygen

Question

What is the solubility of oxygen in water in contact with air when the atmospheric pressure is 0.88 atm, the temperature is 16oC, and the chloride concentration is 1000 mg/L?

Answer 1

Hi Ecem E.,

Actually, you aren't given enough info to exactly solve this. Chloride does not occur in water in isolation, so you would want to know the concentrations and identities of counterion(s) so that you could use the appropriate tool to solve. I suppose molarity, molality, or ionic strength of the solution figures into solubility, in a minor way. The solubility is directly proportional to P(O₂) and decreases with increasing temperature -- I don't have a clue what's the molar heat of solution, which you would apply in a Clausius-Clayperon type equation.

--Cheers, --Mr. d.