Amperometric titrations (Stock, John T.)

37l Coulometric Titrations

Notes 1. Alternatively, grease and organic materials can be removed by heating platinum electrodes to redness in a flame. Do not touch electrode surfaces with your fingers after cleaning because grease and oil cause nonadherent deposits that can flake off during washing and weighing. 2. Chloride ion must be totally excluded from this determination because it attacks the platinum anode during el...

Non aqueous titrations pdf

Potentiometric Endpoint Methods Electrochemical Titrations

The basis of potentiometry is the Nernst equation, which relates the concentration of electroactive species at the surface of an electrode (C) to the potential of that electrode (E); that is, for the reaction O + e = R where E is the formal redox potential of the electron transfer reaction. In a potentiometry experiment, the open-circuit potential (i.e., there is no measurable current through t...

Precise Coulometric Titrations of Halides

The determination of halides is of interest in many chemical investigations. For example, in a recent determination of the atomic weight of chlorine[l] * it was necessary to determine the chloride content of dilute solutions with high precision. For such applications, coulometric titration is particularly advantageous because it involves a minimum of manipulation. A further advantage is that th...

In Memoriam of John T. Shepherd, MD, DSc.

John T. Shepherd, MD, DSc (Figure) was born on May 21st, 1919, in Northern Ireland and passed away in Rochester, Minnesota, on October 4, 2011, after a protracted illness. With his passing we have lost a great integrative physiologist who contributed much to the field of cardiovascular medicine, and to our scientific community. His friends and colleagues will remember his gentle humor, engaging...