Transcription of 2 POTENTIOMETRIC TITRATIONS - cffet.net
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2 POTENTIOMETRIC TITRATIONS - cffet.net
2 potentiometric titrations General Principles The Nernst equation tells us that a measurable quantity - voltage or potential - is related to the concentration of species in solution. In many cases, the measured potential is due to a number of species, and hence the concentration of one can be difficult or impossible to determine. Electrodes have been designed to respond only to one (or a very small number of) species, thus allowing the measurement of its concentration. This is known as direct potentiometry, and will be discussed in the next chapter.
2. Potentiometric Titrations 15 2.5 Reaction Types Titration reactions are of four basic classes: • acid-base • redox • precipitation
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