[NM023051A], Technical Note, Arthur Edwin Kennelly, December 7th, 1888
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Title
[NM023051A], Technical Note, Arthur Edwin Kennelly, December 7th, 1888
Editor's Notes
Continuatin of temperature series on bottles of meters followed by "The following hypothesis is no under considderation by evidence. To account for the improved behavior of the plate in themeter bottles after amalgamating the plates hot and heating the solution.##Under ordinary conditions as met with in present practice the zinc plates in the presence of mercury and water forms Zn(H))2 taking the oxygen either from gas occluded under the amalgamated surface or from dissolved oxygen in the solution and the hydrogen from such traces of acid as may be in solution or from the water the reaction being 2Zn +2(H2)) + )2 = 2(Zn(HO)x##When however this salt which is more or less insoluble is not found owing to the absence of the necessaryoxygen by driving off the dissolved solution gas and the occluded gases in the metal then the following reaction slowly goes on between the zinc and the ZnSO4 in the presence of water. Zn + 2HxO + ZnSO4 = ZnSo4-Zn(OH)2 + H2##The basic sulphate here formed should have a slighly alkaline reaction. It is said to be soluble in small quanitieis. Hydrogen would be evolved.##It remains to be seen whether the gas that forms on the plate surface is really hydrogen, and whether the same reaction can be obtained with pure zinc without the presence of mercury.
Author
Mentioned
Date
1888-12-07
Type
Subject
Folder/Volume ID
NM023-F
Microfilm ID
104:306
Document ID
NM023051A
Publisher
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University