SDS Volume (1303)
Volume 57. Ethene, p None
Original Measurements
Clever, H. L.; Baker, E. R.; Hale, W. R.; J. Chem. Eng. Data 1970, 15, 411-3.
Variables:
Room Temp:
303.15
$\pu{K}$
Pressure:
95.75
$\pu{kPa}$
Amount concentration (2):
C2/mol dm-3 = 0 - 0.0338
g/L
Prepared by:
Method/Apparatus/Procedure:
The apparatus and method were similar to those described by Markham and Kobe [1].
Aqueous solution of Silver nitrate were prepared, degassed by refluxing under vacuum, and transferred to the solubility apparatus without contact with atmospheric gases. The solubility of ethene at a partial pressure of 0.945 atm (95.75 kPa) was measured by observing the volume of gas, saturated with water vapor, absorbed by an 88.5 mL sample of degassed solution at 30.0 °C and a total pressure of 1 atm (101.3 kPa).
Source and Purity of Materials:
- Ethene. Matheson Co., Inc. Stated to have 99.5% minimum purity.
- Silver nitrate. Reagent grade.
- Water. Distilled.
Estimated Errors:
Ambient temperature: δT/K = ±0.05
Mass concentration (m/v) (1): δc1/c1 = ±0.01
References
1 Markham, A. E.; Kobe, K. A.; J. Am. Chem. Soc. 1941, 63, 449.
Components:
- Ethene, $\ce{ C2H4 }$; [74-85-1] NIST WebBook
- Silver nitrate, $\ce{ AgNO3 }$; [7761-88-8] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
Henry's constant for pure water is C2H4(ag, c1 ⇔ C2H4 (g, p1) KH = (p1/kPa)/(c1/mol dm-3) = 23130
The authors combined the data above with other information to calculate the silver ion + ethene association constant
Ag+ (aq) + C2H4(ag) ⇔ C2H4-Ag+(aq) K1 = 76.
Table 1. Ethene Solubility at 0.945 atm (95.75 kPa)
| $T$ ($\pu{K}$) | $T$ (°C) | $C_{2}$ (mol/dm3) | $C_{1}$ (mol/dm3) |
|---|---|---|---|
| 303.15 | 30.0 | 0 | 4.17 x 10-3 |
| 303.15 | 30.0 | 1.1 x 10-3 | 4.46 x 10-3 |
| 303.15 | 30.0 | 2.8 x 10-3 | 4.68 x 10-3 |
| 303.15 | 30.0 | 5.6 x 10-3 | 5.35 x 10-3 |
| 303.15 | 30.0 | 0.0113 | 6.70 x 10-3 |
| 303.15 | 30.0 | 0.0226 | 8.99 x 10-3 |
| 303.15 | 30.0 | 0.0338 | 0.01088 |
(a) Calculated by the compiler. Molar volume STP, V/cm3 mol-1 = 22,246 The numbers in ( ) are the number of determinations.
