Accession Number:

AD0412846

Title:

THE TRIVALENCY OF GALLIUM IONS FORMED DURING THE DISSOLUTION OF THE METAL IN ACIDS,

Descriptive Note:

Corporate Author:

MISSOURI SCHOOL OF MINES AND METALLURGY ROLLA

Personal Author(s):

• Straumanis,M.E.
• Poush,K.A.

Report Date:

1963-07-01

Pagination or Media Count:

13.0

Abstract:

Gallium dissolves very slowly in diluted acids like HCl, H2SO4 and HClO4. T rate can be sub stantially accelerated if the metal is connected with a Pt electrode in the same solution. From the volume of the hydrogen developed the trival ency of Ga ions going into solution can be cal culated. The same ionic charge is obtained from coulometric measurements using Ga amalgam as an anode. Ga disintegrates partially while it is going anodically into solution. The diameter of the smallest observable Ga particles is below 7 x 10 to the -5th power mm in diameter. If the solution is not cooled the formation of larg er metallic spheres is observed. Disintegration explains the deviation from Faradays law and the presence of the small particles - the reducing ability of the electrolyte. The postulation of Ga ions of lower valency is not necessary and their presence can not be proved. Author

Descriptors:

• *GALLIUM
• *ACIDS
• SOLVATION
• SULFURIC ACID
• PERCHLORIC ACID
• IONS
• ELECTROLYSIS
• PLATINUM

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE