A syllabus of a course of lectures on chemistry, delivered at the Royal Institution of Great Britain / [Sir Humphry Davy].

  • Humphry Davy
Date:
1802
Catalogue details

Licence: Public Domain Mark

Credit: A syllabus of a course of lectures on chemistry, delivered at the Royal Institution of Great Britain / [Sir Humphry Davy]. Source: Wellcome Collection.

    22/104 (page 12)
    / /, means of sulphuric acid. It is a permaitent gas at all known temperatures. It is heavier than atmospheric air. It is soluble to a great extent in water. Its taste is very pungent and sour. 2‘ Fluoric acid is obtained from fluate of lime by means of sulphuric acid. It dissolves silieious earth, and renders it aeriform ; therefore it cannot be preserved pure in glass vessels. Its taste and smell are analogous to those of muri- atic acid; and, like that acid, it is a gas at all known tem- peratures. It is extremely soluble in water, and combin- able not only with the alkaline, but likewise with the earthy substances. 3* Boeacic acid is procured from alkaline borate of soda by means of sulphuric acid. It is a white solid body, pos- sessing very little taste and no smell. It is fusible when dry at the red heat; and when moist, it is even volatile at a much lower temperature. It is soluble in 50 times its weight of boiling water. DIVISION III. OF BODIES COMPOSED OF TWO SIMPLE SUBSTANCES, OR BINARY COMPOUNDS. 1. Arrangement of Binary Compounds. The simplest chemical actions of the undecompounded substances on each other, are exerted in the production of binary compounds. Of these compounds, some are found in nature, and others are produced by art, either directly, by bringing the principles that compose them into apparent contact at a certain temperature ; or, indirectly, by analytical pro- cesses, in which bodies more compounded are the subjects of experiment. The binary compounds, if we consider their relations to each other, and to the general chemical arrangment ol substances, may be divided into six classes. I. Compounds containing oxygene. II. Hydro-