A text-book on chemistry : for the use of schools and colleges . CARBON AND HYDROGEN. 243 If, through a tube, the breath be made to pass intolime-water, a deposit of carbonate of lime renders thewater milky; or, if the breath be conducted through lit-mus water, the color changes to red ; the air thus expiredfrom the lungs contains three or four per cent, of carbonicacid. Under a pressure of thirty-six atmospheres, carbonic acidcondenses into a liquid characterized by the extraordinaryquality that it is four times more expansible by heat thaneven atmospheric air. This liquid, when allowed to es
A text-book on chemistry : for the use of schools and colleges . CARBON AND HYDROGEN. 243 If, through a tube, the breath be made to pass intolime-water, a deposit of carbonate of lime renders thewater milky; or, if the breath be conducted through lit-mus water, the color changes to red ; the air thus expiredfrom the lungs contains three or four per cent, of carbonicacid. Under a pressure of thirty-six atmospheres, carbonic acidcondenses into a liquid characterized by the extraordinaryquality that it is four times more expansible by heat thaneven atmospheric air. This liquid, when allowed to es-cape through a jet, evaporates so rapidly, and produces somuch cold, that a portion of it instantly solidifies. Solidcarbonic acid is a substance not unlike snow; mixed withalcohol or ether, it produces a degree of cold equal to—180° Fahr. Although carbonic acid has the name of an acid, it pos-sesses the properties indicated by that term in a feebledegree. The gas contains its own volume of common test for its presence is lime-water, which isren
Size: 1090px × 2294px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthordraperjohnwilliam1811, bookcentury1800, bookdecade1840
