Components:
(1) Tetrachloroethene,
C2Cl4; [127-18-4]
NIST WebBook
(2) Water,
H2O; [7732-18-5]
NIST WebBook
Original Measurements
Munz, C. D.; Ph.D. Dissertation, Stanford University, Stanford, CA 1985, 306 pp.
Variables:
Ambient temperature: 283 - 303 K
Prepared by:
Method/Apparatus/Procedure:
The multiple equilibrium technique with direct aqueous injection into a gas chromatograph was used to determine the dimensionless Henry's law constant. A known volume of liquid and gas was introduced into a syringe and allowed to equilibrate. The ratio of gas to liquid volume was maintained constant. While vapor samples were injected directly into a gas chromatograph, the liquid samples were preconcentrated by liquid-liquid extraction before analysis. The experiments were carriedout in duplicates.
Source and Purity of Materials:
- Matheson Coleman & Bell, OH.; greater than 99.5% pure.
- Distilled and deionized.
Estimated Errors:
Ambient temperature: ±0.5 K.
Mass concentration (m/v) (1): ±0.019 std. dev.
Experimental Values:
| T (°C) | 100w1a | x1a | H |
|---|---|---|---|
| 10.0 | 2.030 x 10-2 | 2.206 x 10-5 | 3.69 x 10-1 |
| 20.0 | 2.203 x 10-2 | 2.394 x 10-5 | 5.816 x 10-1 |
| 30.0 | 2.201 x 10-2 | 2.392 x 10-5 | 9.544 x 10-1 |
