Components:
(1) Water,
H2O; [7732-18-5]
NIST WebBook
(2) Sodium hydroxide,
NaOH; [1310-73-2]
NIST WebBook
(3) 1,1-Dichloroethane,
C2H4C12; [75-34-3]
NIST WebBook
Original Measurements
Newsham, D. M. T.; Measurement and Correlation of Thermodynamic Data for Chlorinated Hydrocarbons, UMIST, Manchester (January. 1981).
Variables:
Ambient temperature: 298 - 323 K
Prepared by:
Method/Apparatus/Procedure:
Samples were equilibrated for at least ten days in a water thermostat. Water analysis was done using an automatic Karl Fischer titration apparatus. The instrument accuracy was specified to be 1 %. All samples were handled with a hypodermic syringe which was weighted before and after each addition. The instrument was calibrated using a synthetic mixture of 1 % water in methanol.
Source and Purity of Materials:
- Distilled (compiler).
- Source and purity not given.
- Source not given, contained less than 0.1 dissolved material.
Estimated Errors:
Ambient temperature: ±0.1 K.
Mass concentration (m/v) (1): ±1%.
Experimental Values:
Note: a1=water activity (=p1/p°).p1=partial pressure of water in solution.
p°=vapor pressure of pure water.
| T (°C) | P (mm Hg) | 100w2 | x1 | α1 |
|---|---|---|---|---|
| 25.0 | 1.67 | 53.2 | 5.58 x 10-4 | 7.03 x 10-2 |
| 50.0 | 2.1 | 59.2 | 1.04 x 10-3 | 2.3 x 10-2 |
| 25.0 | 23.76 | 0.0 | 5.30 x 10-3 | 1.0 |
| 50.0 | 92.51 | 0.0 | 1.067 x 10-2 | 1.0 |
