Compilation - Benzene with Water (IUPAC SDS Volume 37)
SDS Volume (628)
Volume 37. Hydrocarbons in Water and Seawater, Part I, p 125
Original Measurements
Pavia, R. A.; "The Solubility of Water in Benzene", M.S. Thesis, 1958, North Carolina State College, Raleigh, NC.
Variables:
Room Temp: 9.3 - 65 °C
Prepared by:
Method/Apparatus/Procedure:
Water and benzene were equilibrated in a 4-L pyrex vessel fitted with a stirrer. Equilibration typically required about 100 h of stirring. Care was taken to avoid condensation of water on the vessel lid and selective absorption of water on the glass walls. Samples of analysis were withdrawn by air pressure. Water was determined by Karl Fischer titration.
Source and Purity of Materials:
- Distilled in a tinned Barnstead still (specific conductivity $\pu{5-20E-7 ohm-1}$
- Allied Chemical: purified by triple fractional crystallization; purity 99.99 mol%; $n_{0}^{25}$ = 1.49806.
Estimated Errors:
Ambient temperature: ±0.01°C
Mass concentration (m/v) (1): ±1% relative; type of error not stated
Components:
- Benzene, $\ce{ C6H6 }$; [71-43-2] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
Solubility of water in benzene
| $T$ (°C) | $P$ (mm Hg) | $x_{2}$ | $x_{2}$ | MR2 (g2/100 g sln) |
|---|---|---|---|---|
| 9.28 | 8.774 | 1.783 x 10-3 | 1.783 x 10-3 | 0.04117 |
| 20.00 | 17.535 | 2.592 x 10-3 | 2.592 x 10-3 | 0.05989 |
| 20.00 | 17.535 | 2.629 x 10-3 | 2.629 x 10-3 | 0.06076 |
| 30.17 | 32.136 | 3.597 x 10-3 | 3.597 x 10-3 | 0.08318 |
| 40.15 | 55.764 | 4.845 x 10-3 | 4.845 x 10-3 | 0.11216 |
| 49.97 | 92.37 | 6.567 x 10-3 | 6.567 x 10-3 | 0.15222 |
| 59.90 | 148.70 | 8.657 x 10-3 | 8.657 x 10-3 | 0.2010 |
| 65.00 | 187.54 | 9.730 x 10-3 | 9.730 x 10-3 | 0.2261 |
(a) Average of three separate analyses.
Results were represented with a "probable deviation of 0.8%" by the equation log10 (100 s) = 0.117135 + 0.5162095 log10 ps1 + 0.0127866 (log10 ps1)2 where s is the solubility of water in benzene in g(2)/100 g sln and ps1 is the equilibrium vapour pressure of the solution.
