A new system of chemical philosophy by Dalton John 1766-1844

Author:Dalton, John, 1766-1844
Language: eng
Format: epub
Tags: Atomic theory, Chemistry, Inorganic
Publisher: London

water, and there came out 51, of which 5 + were combustible and took 9 oxygen. After this the bottle of water was put into a pan of water which was raised to the boiling heat, a bent tube filled with water being adapted to the water bottle, and having its end immersed in water: by this operation gas was expelled from the water, and caught in the neck of the bottle; when it amounted to 22 grain measures it was transferred and was found to consist of 17 azote +5 combustible, which took 10 oxygen. By these experiments we see that the gas is expelled again from the water, both by ebullition and by other gases, nearly the same in quality, but much diminished in quantity, the reason of which is not very obvious. The liquid now required 30 measures of oxyrauriate of lime, equivalent to 100 measures of oxygen, before it was saturated ; that is, there appeared to be 50 phos-phuretted hydrogen remaining in the water. Adding a little lime-water threw down a very sensible quantity of phosphate of lime.

The expansion of phosphuretted hydrogen by electricity is a subject on which there has been as much diversity as on its absorption. In 1797, Dr. Henry found that it expanded " equally with carbonated hydrogen." (Philos. Trans). In 1800, Davy states that phosphu-

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