Open AccessOn the velocity of sound in gases and vapours, and the ratio of the specific heats
Author(s) -
Harold Baily Dixon,
Gilbert Greenwood
Publication year - 1924
Publication title -
proceedings of the royal society of london. series a, containing papers of a mathematical and physical character
Language(s) - English
Resource type - Journals
eISSN - 2053-9150
pISSN - 0950-1207
DOI - 10.1098/rspa.1924.0014
Subject(s) - vapours , chemistry , carbon dioxide , benzene , nitrogen , ammonia , thermodynamics , organic chemistry , physics , neuroscience , biology
The experiments described in this memoir were made in continuation of those carried by Dixon, Campbell and Parker on the velocity of sound in gases at high temperatures. Our object was to determine the velocity of sound in the vapours of the low-boiling inflammable liquids ether, methyl and ethyl alcohols, pentane, hexane and benzene, and in condensable gases such as ethylene and ammonia.Corrigendum . As a preliminary we desire to take this opportunity of making a correction (which Prof. J. R. Partington has pointed out to us) in the calculation of the ratio of the specific heats from the velocity of sound in “free” nitrogen, carbon dioxide, methane and ethane, given in the former paper. For instance, by the use of round figures, the values ofγ between 0° and 500°C. derived from the velocity of sound in free nitrogen were made 0·002 too high, a difference which appreciably affects the value of Cv calculated from it; and similarly the valuesγ for carbon dioxide between 0° and 300°C. were made too low. The Tables XI, XIII, XIV and XV printed on pages 23 and 24 of that memoir have therefore been recalculated, the new gas constant R = 1·9875 being used, and should read as follows