Coulometric Titration of Salicylic Acid

A Coulometric-Titration Coulometer

A highly precise coulometer is described which permits time integration of currents totaling 100 coulombs or more with a precision of about 1 part in 100,000. The current to be integrated oxidizes hydroquinone in an electrolysis cell, producing quinone and acid. The quinone is t hen reduced by constant-current coulometric titration, the end point being indicated by hydrogen-ion concentration me...

Simple and Automated Coulometric Titration of Acid Using Nonisolated Electrodes

Simple and Automated Coulometric Titration of Acid Using Nonisolated Electrodes Thomas S. Kuntzleman,* Joshua B. Kenney, Scott Hasbrouck, Michael J. Collins, and John R. Amend Department of Chemistry, Spring Arbor University, Spring Arbor, Michigan 49283, United States Department of Chemistry, University of Georgia, Athens, Georgia 30602, United States Department of Chemistry, Viterbo Universit...

Coulometric Titration with Electrogenerated Tin(II). Titration of Platinum(IV)

High Precision Coulometric Titration of Uranium

An improved method for the coulometric assay of uranium and uranium oxide has been developed based on the electrogeneration of Tif II in H2SO,, using Fe(lI) as a catalyst. The endpoint is determined amperometrically. Hydrogen peroxide is used as the oxidant in the dissolution of the uranium to avoid interferences from nitrate. The precision of the method as indicated by the standard deviation o...

Precise Coulometric Titration of Acids and Bases

Apparatus and techniques a re dc~cribed for t he t itration of ac ids a nd. bases by constantcurrent coulometry. The precision nnd accuraey of t he method aI~e JndLcated by tl traLlons of benzoic acid, potass ium acid pMhalate, adLpiC aCld, hydroc~lo l'l c aCid, ~nd sod ium eal'bonate. Standard deviations of ± 0.003 p er cent have been obtaIned which LndlCatp. that the reliabi li ty of the meth...