The bromoethane (1) and water (2)
binary system is treated in two parts; part 1 is bromoethane (1) in water (2)
and part 2 is water (2) in bromoethane (1).
Part 1. The solubility of
bromoethane (1) in water (2) has been studied at ambient temperature by four
groups of workers with reasonably good agreement. A temperature dependence of
the solubility was reported in only one paper,1 between 273 and 303
K.
The available solubility data of
Rex,1 Fühner,2 van Arkel and Vles,3 and Donahue
and Bartell4 were used to obtain the following mass percent (1) equation:
Solubility [100 w1 = 13.2481 – 8.0012 × 10–2 (T/K) + 1.29448 × 10–4 (T/K)2.
This equation, which represents the
combined data points, shows a standard deviation of 1.53 × 10–2 in the narrow temperature
interval from 273 to 303 K. The tentative solubility at 5 K intervals for bromoethane
(1) in water (2) is listed in Table 1.
While it is most likely that a solubility
minimum exists above 303 K, as yet no measurements have been reported for this
temperature range.
Part 2. The solubility of
water (2) in bromoethane (1) has been reported by two workers at 298 K only.
The two measurements of Hutchison and Lyon5 and Donahue and Bartell4
compares favorably with the likely solubility. It is not possible to say which
of the two measurements is more reliable; therefore, the average of the two
determinations is probably the most reliable value, that is, 0.0774 [100 w2]
at 298.15 K. This value is classified as tentative. More accurate solubility
determinations are required, most certainly at the higher temperatures.