The following tables give some of the numerical data:—
Isotherm for 20°.
| Solid Phase. | Composition of the solution. Gram-mols. in 1000 gm.-mols. of water. | |
| Bi2O3 | N2O5 | |
| B1-1-1 | 10.50 | 38.65 |
| — | 27.20 | 83.84 |
| B1-1-1; S10 | 30.15 | 97.97 |
| S10 | 29.70 | 96.57 |
| — | 19.65 | 98.76 |
| — | 10.51 | 162.58 |
| — | 33.51 | 355.87 |
| S10; S3 | 51.00 | 403.0 |
| S3 | 14.35 | 492.0 |
| — | 7.45 | 592.9 |
Systems in Equilibrium with B1-1-1 and S10 (Curve pabc).
| Solid Phase. | Composition of the solution. Gram-mols. in 1000 gm.-mols. of water. | |
| Bi2O3 | N2O5 | |
| 9° | 26.7 | 88.2 |
| 20° (point a) | 30.15 | 97.97 |
| 30° | 33.6 | 112.3 |
| 50° | 41.8 | 148.4 |
| 65° | 57.21 | 190.8 |
| 75.5° (point b) | 87.9 | 288.4 |
| 72° (point c) | 96.0 | 327.0 |
Systems in Equilibrium with S10 and S3 (Curve qde).
| Solid Phase. | Composition of the solution. Gram-mols. in 1000 gm.-mols. of water. | |
| Bi2O3 | N2O5 | |
| 11.5° | 44.5 | 396 |
| 20° | 51.0 | 405.4 |
| 50° | 66.5 | 444.2 |
| 65° | 80.0 | 454.4 |
Basic Mercury Salts.—The Phase Rule has also been applied by A. J. Cox[[375]] in an investigation of the basic salts of mercury, the result of which has been to show that, of the salts mentioned in text-books, quite a number are incorrectly stated to be chemical compounds or chemical individuals (p. [92]). The investigation, which was carried out essentially in the manner described above, included the salts mentioned in the following table; and of the basic salts said to be derived from them, only those mentioned really exist. In the following table, the numbers in the second column give the minimum values of the concentration of the acid, expressed in equivalent normality, necessary for the existence of the
corresponding salts in contact with solution at the temperature given in the third column:—