Solubility System: Carbon dioxide with Potassium iodide and Water (Original Report)

Components:
(1) Carbon dioxide, CO2; [124-38-9] NIST Chemistry WebBook
(2) Potassium iodide, KI; [7681-11-0] 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 - 5
Prepared By:
D.M. Mason
Experimental Data:
Table 1
T (K)T (°C)c2 (mol/dm3)α (a)S (b)
288.151500.99-
288.15150.50.9520.978
288.151510.8940.938
288.151520.8080.892
288.151550.6990.92
293.152000.86-
293.15200.50.820.845
293.152010.7710.818
293.152020.6850.758
293.152050.6550.864
298.152500.7580.5173
298.15250.50.7190.742
298.152510.6780.713
298.1525206160.682
298.152550.5880.788
303.153000.671-
303.15300.50.6260.65
303.153010.5950.6275
303.153020.5480.608
303.153050.5350.7085
308.153500.605-
308.15350.50.5560.5755
308.153510.5180.5475
308.153520.4570.508
308.153550.4940.6565
313.154000.546-
313.154010.4620.489
313.154020.4180.466
313.154050.48140.642
318.154500.482-
318.15450.50.44560.462
318.154510.4120.437
318.154520.3720.416
318.154550.4560.6085
323.155000.436-
323.155010.3630.386
323.155020.3220.3606
328.155500.392-
328.15550.50.3610.375
328.155510.3270.348
328.155520.2960.332
328.155550.3960.531
333.156000.372-
333.15600.50.31880.332
333.156010.2880.307
333.156020.2510.282
333.156050.36150.4885

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 coefficient, 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 discussed 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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