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Which electrodes are used in potentiometry?

Which electrodes are used in potentiometry?

Calomel and silver/silver-chloride electrodes are commonly used in potentiometric titration. In the case of possible interferences of chlorides (as in determination of halides), a mercurous sulfate electrode may be used.

How many electrodes are in potentiometry?

To do this, two electrodes are used, an indicator electrode (the glass electrode and metal ion indicator electrode) and a reference electrode. Reference electrodes generally used are hydrogen electrodes, calomel electrodes, and silver chloride electrodes.

What is potentiometry PPT?

DEFINITION Potentiometry: “Measuring the potential or Emf of a solution by using the set of Indicator electrode and reference electrode”.  It is the primary reference standard against which the potentials of other electrodes are measured.

What are the electrodes used for in potentiometry?

Electrodes: These are mainly used to measure the voltages. Mainly two electrodes are used in the potentiometry .They are as follows: •Reference electrode •Indicator electrode  Reference electrode: These are mainly used for the determination of the analyte by maintaining the fixed potential.

Which is the best definition of potentiometry?

POTENTIOMETRIC ANALYSIS  Based on potential measurement of electrochemical cells without any appreciable current  The use of electrodes to measure voltages from chemical reactions 4. DEFINITION Potentiometry: “Measuring the potential or Emf of a solution by using the set of Indicator electrode and reference electrode”.

What are the different types of potentiometric titration?

32. POTENTIOMETRIC TITRATION  It’s a volumetric method in which potential between two electrodes (reference & indicator) is measured as a function of added reagent volume. 33. TYPES 1. Precipitation titration 2.

How is the potential of an indicator electrode measured?

• The potential of the indicator electrode cannot be measured alone; • For any potentiometric measurement we must have: 1. Reference electrode 2.Indicator electrode. 3.Potentiometer 4.Salt bridge to connect the two electrode solutions and complete the circuit. 5. A- Reference electrode Reference electrode must: 1. Have a constant potential 2.