a. It has been mentioned in [Res. II. Div. I]. that phosphorated hydrogene and nitrous oxide posses no action on each other, at atmospheric temperatures.
Phosphorated hydrogene mingled with nitrous oxide, is capable of being inflamed by the electric spark, or by ignition.
b. E. 1. 10 grain measures of phosphorated hydrogene, carefully produced by means of phosphorus and solution of caustic alkali, were mingled with 52 measures of nitrous oxide. The electric spark passed through them, produced a vivid inflammation. The elastic products were clouded with dense white vapor, and after some minutes filled a space nearly equal to 60. On the introduction of water, no absorption took place. When 43 of nitrous gas were admitted, the whole diminished to 70.
E. 2. 25 of nitrous oxide were fired with 10 of phosphorated hydrogene, by the electric spark. After detonation[176] they filled a space exactly equal to 25. On the admission of solution of green sulphate of iron, and prussiate of potash, no blue or green precipitate was produced. On the introduction of water, no diminution was perceived. 25 of nitrous gas mingled with them, gave exactly 50.
E. 3. 10 of nitrous oxide, mingled with 20 of phosphorated hydrogene, could not be inflamed.
25 of nitrous oxide, with 20 phosphorated hydrogene, inflamed. The gas after detonation, was rendered opaque by dense white vapor, and filled a space nearly equal to 45. No absorption took place when water was introduced. On admitting a little oxygene no white fumes, or diminution, was perceived. The electric spark passed through the mixture, produced an explosion, with great diminution.
c. From E. 1 it appears, that when a small quantity of phosphorated hydrogene is inflamed with nitrous oxide, both the phosphorus and hydrogene are consumed; whilst the superabundant nitrous oxide, is converted into nitrous acid and atmospheric air, by the ignition; or a certain quantity is partially decomposed into atmospheric air by the combination of a portion of its oxygene with the combustible gas.
From E. 2 we learn, that when the phosphorated hydrogene and nitrous oxide are to each other as 25 to 10 nearly, they both disappear, whilst nitrogene is evolved, and water and phosphoric acid produced. Reasoning concerning the composition of nitrous oxide from this experiment, we should conclude that it was composed of about 38 oxygene, and 62 nitrogene.
The result of E. 3 is interesting; we are taught from it that the affinity of phosphorus for the oxygene of nitrous oxide is stronger than that of hydrogene, at the temperature of ignition; so that when phosphorated hydrogene is mingled with a quantity of nitrous oxide, not containing sufficient oxygene to burn both its constituent parts, the phosphorus only is consumed, whilst the hydrogene is liberated.
In repeating the experiments with phosphorated hydrogene that had remained for some hours in the mercurial apparatus, I did not gain exactly the same results; for a larger quantity of it was required to decompose the nitrous oxide, than in the former experiments; doubtless from its having deposited a portion of its phosphorus. They confirm, however, the above mentioned conclusions.