What is the indicator used in Argentometric titration? Give the name and structure of any other two indicators.
Answers
Answer:
Answer:Titrations with silver nitrate are called argentometric titrations. In the Mohr method, sodium chromate (Na2CrO4) serves as the indicator for the argentometric titration of chloride, bromide, and cyanide ions.
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Answer:
In the Mohr method, sodium chromate (Na₂CrO₄) is being used as the indicator for the argentometric titration of chloride, bromide, and cyanide ions. In the Volhard method, Fe (III) ion is serve the purpose of an indicator. The Fajans method uses the adsorption indicator.
Explanation:
Titrations with silver nitrate are known as argentometric titrations. There are three different methods of argentometric titration in use, the Fajans, Mohr, and Volhard methods. These three methods use different indicators. In the Mohr method, sodium chromate (Na₂CrO₄) is being used as the indicator for the argentometric titration of chloride, bromide, and cyanide ions. In the Volhard method, Fe (III) ion is serve the purpose of an indicator. The Fajans method uses the adsorption indicator, an organic compound that adsorbs onto or desorbs from the surface of the solid in a precipitation titration. Ideally, the adsorption or desorption occurs near the equivalence point and results not only in a color change but also in the transfer of color from the solution to the solid or to the solution.
The indicators that are usually used in the laboratory are methyl orange and phenolphthalein. Which has the structure as given in the images.
