Components:
(1) Cyclohexane,
C6H12; [110-82-7]
NIST WebBook
(2) Water-d2,
D2O; [7789-20-0]
NIST WebBook
Original Measurements
Backx, P.; Goldman, S.; J. Phys. Chem. 1981, 85, 2975-9.
Variables:
Ambient temperature: 283 - 313 K
Prepared by:
Method/Apparatus/Procedure:
In a 175-mL milk-dilution bottle fitted with a Bakelite screw cap and a Teflon insert and rotated end-over-end, (1) was equilibrated with an excess of (2), sampled with Hamilton syringes and titrated in an Aquatest II automatic Karl Fischer Titrator.
Source and Purity of Materials:
- certified grade; washed with water, dried with silica gel, and distilled; d25 0.77390.
- Obtained from the manufacturer; minimum isotopic purity of 99.7 atom% D.
- obtained from the manufacturer; minimum isotopic purity of 99.7 atom% D.
Estimated Errors:
Ambient temperature: ±0.01 K
Std. dev. of soly calcd from 18-32 determinations reported above.
Experimental Values:
Solubility of deuterium oxide in cyclohexane
| T (K) | x2 | MR2 (g2/100 g sln) |
|---|---|---|
| 283.0 | 1.57 x 10-4 | 3.74 x 10-5 |
| 288.0 | 1.81 x 10-4 | 4.31 x 10-5 |
| 293.0 | 2.42 x 10-4 | 5.76 x 10-5 |
| 298.0 | 2.80 x 10-4 | 6.66 x 10-5 |
| 303.0 | 3.61 x 10-4 | 8.59 x 10-5 |
| 308.0 | 4.64 x 10-4 | 1.104 x 10-4 |
| 313.0 | 5.35 x 10-4 | 1.274 x 10-4 |
(a) Error, std. dev.
