Oxygen Solubility in Fresh and Sea Water

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Oxygen Solubility in Fresh and Sea Water

Solubility of oxygen in equilibration with air in fresh and sea (salt) water - pressures ranging 1

- 4 bar abs

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Normal dissolved oxygen in fresh and sea (salt) water at pressure ranging1 - 4 bar absare indicated in the

diagram and tables below.

Note! - in air with normal composition the oxygen partial pressure is 20% of the total pressure. This results in a20% oxygen dissolution compared to pure oxygen.

Oxygen Solubility in Fresh and Salt Water - Chart (pdf)

The salinity of sea water in the oceans ranges 30 to 50 parts per thousand (30,000 - 50,000 ppm), on average 35

ppt.

35 g dissolved salt / kg sea water = 35 ppt = 35 o/oo = 3.5% = 35,000 ppm

The salinity is not uniform and varies with the location and depth. Water of salinity between freshwater andseawater is called brackish.

Oxygen Solubility in Fresh Water - Salinity ~ 0

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Solubility of Oxygen in Fresh Water -Salinity ~ 0

Pressureabs

mm

Hg760 1520 3040

psi 14.7 29.3 58.7

bar 1 2 4

kPa 101.1 202.2 404.3

Temperature Solubility

oC oF Mol mg/l ml/l Mol mg/l ml/l Mol mg/l ml/l

0 32 457 14.6 10.2 913 29.2 20.5 1823 58.4 40.9

5 41 399 12.8 9.1 798 25.5 18.2 1595 51.1 36.4

10 50 353 11.3 8.2 705 22.6 16.4 1411 45.1 32.8

15 59 315 10.1 7.5 630 20.2 14.9 1260 40.3 29.8

20 68 284 9.1 6.8 568 18.2 13.7 1137 36.4 27.3

25 77 258 8.3 6.3 517 16.5 12.6 1034 33.1 25.3

30 86 236 7.6 5.9 473 15.2 11.8 947 30.3 23.6

35 95 218 7 5.5 436 14 11 872 27.9 22.1

40 104 202 6.5 5.2 404 12.9 10.4 808 25.9 20.8

45 113 189 6 4.9 375 12 9.8 751 24 16.9

50 122 177 5.6 4.6 355 11.3 9.3 710 22.7 18.7

Oxygen Solubility in Sea Water - Salinity ~ 35

Solubility of Oxygen in Sea Water -Salinity ~35

Pressureabs

mm

Hg 760 1520 3040

psi 14.7 29.3 58.7

bar 1 2 4

kPa 101.1 202.2 404.3

Temperature Solubility

oC oF Mol mg/l ml/l Mol mg/l ml/l Mol mg/l ml/l

0 32 349 11.2 7.8 699 22.4 15.7 1399 44.8 31.3

5 41 308 9.9 7 616 19.7 14.1 1233 39 28

10 50 275 8.8 6.4 550 17.6 12.8 1099 35.2 25.6

15 59 248 7.9 5.9 495 15.9 11.7 991 31.7 23.4

20 68 225 7.2 5.4 450 14.4 10.8 901 28.8 21.7

25 77 206 6.6 5 413 13.2 10.1 826 26.4 20.2

30 86 190 6.1 4.7 381 12.2 9.5 761 24.4 18.9

35 95 176 5.6 4.5 353 11.3 8.9 706 22.6 17.940 104 165 5.3 4.2 329 10.5 8.5 658 21.1 16.9

45 113 154 4.9 4 308 9.9 8 616 19.7 16.1

50 122 146 4.6 3.8 292 9.4 7.7 585 18.7 15.4

dissolution of pure oxygen

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Related Documents

Air So lubility in Water - Amount of air that can be dissolved in water - decrease with temperature -increase with pressureOxygen - Chemical, Physical and Thermal Properties of Oxygen -O2Oxygen - Specific Heat - Specific heat of Oxygen Gas - O2- at temperatures ranging 175 - 6000 K

Salinity of Water - Water salinity of fresh, brackish and sea waterSolubility of Gases in Water - Solubility diagrams of gases like Carbon dioxide, Argon, Methane andother gases in water at diff erent temperatures

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