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ReneQuinhydrone is used in potentiometric titrations as an indicator electrode because it can undergo a reversible redox reaction in the presence of analytes to produce a measurable potential change. This allows for the endpoint of the titration to be accurately determined based on the change in potential. Additionally, quinhydrone has a high stability and selectivity towards certain analytes, making it a suitable choice for potentiometric titrations.
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What are the disadvantages of potentiometric titration?
Some disadvantages of potentiometric titration include the need for specialized equipment such as a pH meter or ion-selective electrode, which can be costly. Additionally, it may require a skilled operator to perform the titration accurately and interpret the results correctly. Potentiometric titration can also be slower compared to other titration methods.
What is the use of potentiometric titration?
Potentiometric titration is used to determine the concentration of an analyte by measuring the change in electromotive force (EMF) of a titration reaction. It is commonly used in chemical analysis to determine the equivalence point of a reaction, as well as to measure the pKa values of acids and bases.
What is the indicator use in potentiometric titration?
The indicator used in potentiometric titrations is typically a pH electrode. By measuring changes in pH during the titration process, the endpoint of the titration can be determined accurately. The pH electrode provides a continuous measurement of the solution's pH, allowing for a precise determination of the equivalence point.
What is a potentiometric titration?
Potentiometric titration is a technique used to determine the concentration of an analyte in a solution by measuring the potential difference between two electrodes in the solution. It involves adding a titrant solution of known concentration to the analyte solution until the equivalence point is reached, where the two solutions react completely. The equivalence point is determined by the inflection point on the titration curve, and the concentration of the analyte can be calculated from this data.
What is the advantage of potentiometric titration?
Potentiometric titration allows for a direct measurement of the equivalence point without the need for a visual indicator. It provides precise and accurate results, especially for complexometric reactions or when indicators may interfere with the reaction.
