Advanced inorganic chemistry / by G.H. Bailey ; edited by William Briggs.

  • Bailey, G. H.
Date:
[1898]
Catalogue details

Licence: Public Domain Mark

Credit: Advanced inorganic chemistry / by G.H. Bailey ; edited by William Briggs. Source: Wellcome Collection.

    16/368
    PROPERTIES OF GASES. Relation of volume of Gases to the pressure to which they are subjected.—An experimental investigation of tliis may be made by using the simple apparatus here described. A B C is a bent glass tube of even diameter, one limb of which is made at least 8 feet long, and the other, provided with a tap at the extremity, is 40 inches. A side tube is provided at B, for running off mercury from the longer limb. It is not necessary to graduate the tubes throughout, but the following points may be marked on the shorter limb— (1) a point 4 inches from C. (2) a point 6 inches from C. (3) a point 12 inches from C. (4) a point 24 inches from C. (5) a point 39 inches from C. And on the longer limb— (6) a point 63 inches higher than the level of (5). (7) a point 95 inches higher than the level of (5). Open the tap and pour in mercury to the level (3X then close the tap, and al- low mercury to run off till it falls to level of (4). The pressure to which tlie gas is subjected is now that of the atmosphere (say 30 inches of mercury, minus the column of mercury in the shorter limb that stands above the point (5), i. e. 15 inches of mercury). The length of the tube occupied by the gas is now 24 inches instead of 12 inches at the outset. Tlie Fio. 1.