Abstract
The controlled potential coulometric determination of platinum, copper, chromium, and vanadium in fused lithium chloride-potassium chloride eutectic was studied. Platinum(II) was determined with a relative error of 0.67% by plating out the metal, and copper(II) with a relative error of 0.45% both by deposition of the metal and by stripping from graphite or platinum electrodes. Chromium was determined with a relative error of 0.38%, by reduction of chromium(III) to chromium(II), and vanadium wit a relative error of 1.0% by oxidation of vanadium(III). sing a coulometric procedure, the standard electrode potentials of the vanadium(III) -- vanadium(II) and chromium(III) chromium(II) systems were determined in solutions ranging from 0.016 to 0.04M. Polarograms of niobium solutions made by anodizing the metal in the melt exhibited two waves. Coulometric and polarographic data indicated that the solutions contained niobium(IV) and niobium(III) in a concentration ratio of 3 to 1.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
