Page:Scientific Papers of Josiah Willard Gibbs.djvu/439

Rh and for perchloride of phosphorus, By these equations the values of $$\text{L}$$ are easily calculated. The values of $$\text{A}$$ may then be obtained by inspection (with interpolation when necessary) of the following table. From $$\Delta$$ the value of $$\text{D}$$ may be obtained by multiplying by $$\text{D}_{1}$$, viz., by 1.589 for peroxide of nitrogen or formic acid, by 2.073 for acetic acid, and by 3.6 for perchloride of phosphorus.

The constants of these equations are of course subject to correction by future experiments, which must also decide the more general question in what cases, and within what limits, and with what degree of approximation, the actual relations can be expressed by equations of such form. In the case of perchloride of phosphorus especially, the formula proposed requires confirmation.