What is potentiometric titration used for?
Potentiometric titration is a technique similar to direct titration of a redox reaction. It is a useful means of characterizing an acid. No indicator is used; instead the potential is measured across the analyte, typically an electrolyte solution.
What is measured during a potentiometric measurement?
7.1 Introduction. Potentiometric methods are used to measure the electrochemical potentials of a metallic structure in a given environment. These potential values act as a corrosion susceptibility indicator.
What is EMF in potentiometric titration?
In a potentiometric titration, the equivalence point is detected by monitoring the electromotive force (e. m. f.) of an electrochemical cell formed by an indicator electrode coupled with a convenient reference electrode.
What is record in potentiometric titration?
Potentiometric titration belongs to chemical methods of analysis in which the endpoint of the titration is monitored with an indicator electrode that records the change of the potential as a function of the amount (usually the volume) of the added titrant of exactly known concentration.
Why is potentiometric titration more accurate?
The main advantage of using Potentiometric titration method is that it is an inexpensive method. It uses small quantities of substances. These kinds of titrations are more sharp and accurate as the equivalence point is not determined by using colored indicators.
What are the advantages of potentiometric titration over volumetric titration?
What are the advantages of potentiometric titration Mcq?
Frequently Asked Questions on Potentiometric Titration The main advantage of using this method of titration is it requires less quantity of substances and is an inexpensive method.
How does a potentiometric electrode work?
In a potentiometric measurement, an indicator electrode responds to changes in the activity, or “effective concentration” of the analyte. A potential, or voltage, that develops at the interface between the electrode and the analyte solution is measured relative to a reference electrode.
How end point is determine in potentiometric titration?
The end-point of the titration is detected as the potential jump of the plasticized PVC membrane electrode caused by decrease in the concentration of DBS ion added to the sample solution as a marker ion, due to the ion association reaction between the DBS ion and Cat-floe.
What is the disadvantages of potentiometric titration?
The main disadvantage of potentiometric titration is that they are very sensitive to pH. Consumes a lot of time than titration using indicators. Calibration should be performed frequently. Sensitive in ionic strength.
What are the advantages and disadvantages of potentiometric titration?
|Accuracy of the end result is good.||Electrolyte used in the reaction must be freshly prepared.|
|This titration can be performed even in the presence of a small amount of solute whose concentration is to be determined.||Variation in electrolyte pH alters the result of titration.|