Precise Acid Standardization by Coulometric Titration Using Simplified Equipment

Abstract

Performance characteristics of coulometric titration equipment of a commercially available kind were studied by carrying out precise coulometric assays on potassium hydrogen phthalate and constant boiling hydrochloric acid. The cells investigated were of the shield-tube type in which separation of anode and cathode is accomplished by restricted flow of electrolyte. Tests were made on the conventional cell arrangement and on a modified version involving counterflow separation. From results obtained it is concluded that such cells and the associated coulometric instrument are capable of high measurement accuracy. © 1965, American Chemical Society. All rights reserved.