July 2012
Intermediate to advanced
758 pages
17h 12m
English
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Chapter 3
Coulometry
INTRODUCTION
This method is the measurement of the quantity of the electricity. This is mainly estimated by the reaction of electrode. There are mainly two types of coulometric techniques. They are as follows:
- Controlled potential coulometry.
- Constant current coulometry.
PRINCIPLE
The main principle involved in the coulometry is the measurement of the quantity of the electricity which is directly proportional to the chemical reaction at the electrode. This is given by the Faraday's first law:
where Q is the consumed current; Mr is the relative molecular weight.
THEORY
The coulometric methods are mainly based on the measurement ...