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Potentiometric Titrations Video Lecture | Inorganic Chemistry

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FAQs on Potentiometric Titrations Video Lecture - Inorganic Chemistry

1. What is potentiometric titration?
Ans. Potentiometric titration is a technique used in analytical chemistry to determine the concentration of an analyte in a solution by measuring the potential difference between an indicator electrode and a reference electrode. It is based on the principle that the potential difference between the two electrodes changes as the titrant is added to the analyte solution, allowing for the determination of the equivalence point.
2. What are the advantages of potentiometric titration?
Ans. Potentiometric titration offers several advantages over other titration methods. Firstly, it does not require the use of visual indicators, making it suitable for colorless or turbid solutions. Secondly, it allows for more precise determination of the equivalence point, as the potential measurements are highly accurate. Additionally, potentiometric titration can be automated using titration systems, saving time and reducing human error.
3. What are the different types of electrodes used in potentiometric titration?
Ans. In potentiometric titration, different types of electrodes can be used depending on the nature of the analyte and titrant. The most commonly used electrodes are glass electrodes, which are sensitive to changes in pH, and reference electrodes, such as the silver/silver chloride electrode or the calomel electrode. Other specialized electrodes, such as ion-selective electrodes, can also be employed for specific analytes.
4. How is the equivalence point determined in potentiometric titration?
Ans. The equivalence point in potentiometric titration is determined by monitoring the potential difference between the indicator and reference electrodes as the titrant is added. Initially, the potential difference will be low, but it will increase gradually until it reaches a maximum value at the equivalence point. This maximum potential value indicates that the stoichiometric ratio between the analyte and titrant has been achieved, allowing for the determination of the equivalence point.
5. What are the applications of potentiometric titration?
Ans. Potentiometric titration finds applications in various fields of chemistry and industry. It is commonly used in pharmaceutical analysis to determine the purity and concentration of drugs. It is also employed in environmental analysis to measure the concentration of pollutants. Additionally, potentiometric titration is used in food and beverage industries for quality control purposes, such as determining the acidity of juices or the concentration of preservatives in food products.
40 videos|91 docs|41 tests
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