File:A Theory of the Chemical Action of the Electric Discharge in Electrolytic Gas (1911) (14778850084).jpg

Identifier: philtrans09259144 (find matches)
Title: A Theory of the Chemical Action of the Electric Discharge in Electrolytic Gas
Year: 1911 (1910s)
Authors: Kirkby, P.
Subjects: Proceedings of the Royal Society of London Philosophical Transactions of the Royal Society
Publisher: Royal Society of London

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alues of Y, and has supplied one missing value as already alluded to.Still it is important to determine Y by direct experiment, instead of relyingupon the graph, in case anything may occur to disturb the normal value ofY, as in one case corresponding to ^ = 1*4, where the point determined byp, Y, does not fall upon the curve of fig. 3. The values of wjp, ^/p^ Q^ie given in Table I for reasons to follow. Thelast column of the table shows where the positive columns were observedby the eye to begin ; these observations decided the least value of D, whichhad to exceed the distance of the beginning of the positive column from thecathode. The rather complicated notation-symbols which it has been necessary toemploy are here collected and once more fully explained for the purpose ofreference. The reason why so many observations were made with pressures near to1*4 mm. will be given later. One result must be noticed here, namely, 160 Rev. P. J. Kirkby. Ckeinical Action of the (Oct. 13, Table I.
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wj^p. Y/p. 32-5 0-63 31 0-64 30-9 0-70 0-6621 -3 ; 0 -9527 -4 I 0 -90 I 0 -895 I 1-09 I 1-07 1-221-722-04 2-56 2-8210 -5 2 -82 \ I9-6 3 -37 16-4 17-7 18-5 17-9 19-5 20-8 20-3 21-1 21-7 23-928-431-9 35-2 6-5 6-5 6-5 6 •5 7-0 88-3 38-9 1 10-5 1 43-4 10-5 49-7 Notation oe Table I. J? = the mean pressure during tlie discharge in millimetres of mercury.Ap = the fall of pressure produced by the discharge.C = the current of the steady discharge in amperes, so that the second column gives thecurrent in milliamperes.aQ = the quantity of electricity in coulombs passed through during the discharge (C^).D = distance between the electrodes. ■\Y = the number of molecules of water produced by the passage of the atomic quantity ofelectricity between the electrodes = 1*69 x A^/aQ, ~ the total chemical activity of thedischarge.w — the difference of the greatest and least values of W divided by the difference of the corresponding values of D = the chemical activity of the positive column.Y == the

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