[154] For the reasons for choosing anhydrous salt and water instead of salt hydrate and water as components, see p. [14].

[155] See Ostwald, Lehrbuch, II. 2. 527.

[156] Ostwald, Lehrbuch, II. 2. 538.

[157] Zeitschr. physikal. Chem., 1889, 4. 43.

[158] Ber., 1876, 9. 749.

[159] See, for example, van't Hoff, Lectures on Theoretical and Physical Chemistry, I. p. 62 (Arnold).

[160] Jour. Chem. Soc., 1877, 32. 395.

[161] Hoitsema, Zeitschr. physikal. Chem., 1895, 17. 1.

[162] Zeitschr. physikal. Chem., 1887, 1. 5; 1895, 17. 52.

[163] It is important to powder the salt, since otherwise the dehydration of the hydrate and the production of equilibrium occurs with comparatively great tardiness.