How does salinity affect the solubility of oxygen in water ?

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How does salinity affect the solubility of oxygen in water ?

2007-09-25 05:25:28 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

It's not "no effect." Salinity has a significant effect on the solubility of oxygen. Here is an online calculator:

http://www.colby.edu/cpse/equipment2/simple/algo.html

You can see going from freshwater (0 psu salinity) to seawater (35 psu salinity) decreases O2 solubility by 25%, or thereabouts, at 20 C.

Here is some more information:

http://www-ocean.tamu.edu/~dkobilka/oxygen.html

2007-09-25 05:38:55 · answer #1 · answered by gcnp58 7 · 0⤊ 0⤋

Since oxygen is a gas, and sodium chloride a solid, there should be no effect on the solubility of oxygen when you change the salt concentration. Solutes can, and do, act independently.

2007-09-25 12:31:58 · answer #2 · answered by Gervald F 7 · 0⤊ 3⤋