For a given species it is a function of temperature

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Unformatted text preview: f dissolved gases in the liquid. 2. The Henry's constant increases (and thus the fraction of a dissolved gas in the liquid decreases) with increasing temperature. Therefore, the dissolved gases in a liquid can be driven off by heating the liquid (Fig. 1623). 3. The concentration of a gas dissolved in a liquid is proportional to the partial pressure of the gas. Therefore, the amount of gas dissolved in a liquid can be increased by increasing the pressure of the gas. This can be used to advantage in the carbonation of soft drinks with CO2 gas. 812 | Thermodynamics Gas A yA,gas side TABLE 162 Henry's constant H (in bars) for selected gases in water at low to moderate pressures (for gas i, H Pi,gas side /yi,water side) (from Mills, Table A.21, p. 874) Solute H2S CO2 O2 H2 CO Air N2 290 K 440 1,280 38,000 67,000 51,000 62,000 76,000 300 K 560 1,710 45,000 72,000 60,000 74,000 89,000 310 K 700 2,170 52,000 75,000 67,000 84,000 101,000 320 K 830 2,720 57,000 76,000 74,000 92,000 110,000 330 K 340 K 980 1140 3,220 -- 61,000 65,000 77,000...
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This note was uploaded on 06/15/2009 for the course MAE 3311 taught by Professor Hajisheik during the Summer '08 term at UT Arlington.

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