Solubility System: Carbon dioxide with Sodium formate and Water (Original Report)

Components:
(1) Carbon dioxide, CO2; [124-38-9] NIST Chemistry WebBook
(2) Sodium formate, NaCHO2; [141-53-7] NIST Chemistry WebBook
(3) Water, H2O; [7732-18-5] NIST Chemistry WebBook
Original Measurements
Gerecke, J.; Diss. Dr. rer. Nat. 1969, Hochsch. "Carl Schorlemmer", Leuna-Merseburg, DDR.
Variables:
Temperature: 288.15 K - 333.15 K
Pressure: 101.325 kPa
Concentration: c2/mol dm-3 = 0 - 4
Prepared By:
D.M. Mason
Experimental Data:
Table 1
T (K)T (°C)c2 (mol/dm3)α (a)S (b)
288.151500.99-
288.15150.11.011.0145
288.15150.21.0281.034
288.15150.50.9650.978
288.151510.9450.97
288.151520.9330.9875
288.151541.0471.184
293.152000.86-
293.15200.10.8850.89
293.15200.20.9050.911
293.15200.50.8360.849
293.152010.8420.866
293.152020.8290.879
293.152040.9551.082
298.152500.758-
298.15250.10.7780.783
298.15250.20.7910.7975
298.15250.50.7410.754
298.152510.7470.7695
298.152520.7410.7875
298.152540.870.988
303.153000.671-
303.15300.10.6870.692
303.15300.20.7170.7235
303.15300.50.6620.674
303.153010.6750.696
303.153020.6670.709
303.153040.8060.918
308.153500.605-
308.15350.10.6160.621
308.15350.20.6460.6525
308.15350.50.5940.605
308.153510.6110.631
308.153520.6110.651
308.153540.7290.832
313.154000.546-
313.15400.10.560.565
313.15400.20.5830.583
313.15400.50.5310.541
313.154010.5530.5715
313.154020.5420.578
313.154040.6590.754
318.154500.482-
318.15450.10.5050.51
318.15450.20.5280.534
318.15450.50.4680.478
318.154510.5060.523
318.154520.50.5355
318.154540.6020.691
323.155000.436-
323.15500.10.4520.457
323.15500.20.480.487
323.15500.50.4470.456
323.155010.4790.496
323.155020.480.515
323.155040.5820.67
328.155500.392-
328.15550.10.4090.414
328.15550.20.4340.44
328.155510.4620.48
328.155520.4560.49
328.155540.5670.654
333.156000.372-
333.15600.10.3730.378
333.15600.20.3960.402
333.156010.4330.451
333.156020.450.484
333.156040.5480.635

a) α = Bunsen coefficient [cm3 (STP) cm-3 atm-1].
b) S = Kuenen coefficient [cm3 (STP) g-1 (H2O) atm-1].

Method/Apparatus/Procedure:

The principle of the Ostwald method was used in which a measured volume of gas-free liquid is stirred in the presence of the gas, and its decrease in volume is measured in a burette over mercury. The volume of liquid was measured at the experimental temperature. For calculation of the Kuenen coefficent, the density of the solution was obtained from Landolt-Börnstein extant 1969. The molar concentration of salt in the liquid was standardized at 20°C. These data are analyzed and dsicussed further in Ref. 1.

Source and Purity of Materials:

(1) VEB Leuna Works; 99.8 vol%; the impurity was mostly water (author).
(2) DDR pro analysis grade by DDR Standard TGL 5021.
(3) Double distilled.

Estimated Errors

Temperature: Not given.

References:

(1) Gerecke, J.; Bittrich, H. J., Wiss. Z. Tech. Hochsch. Chem. 'Carl Schorlemmer' Leuna-Merseburg 1971, 13(2), 115-22.

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