FAJANS METHOD OF PRECIPITATION TITRATION

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PIKAI PHARMACY --- • Used for the determination of analytes like Fluorine, Chlorine and Iodine. • • Under precipitation titration comes Fajan's Method. Fajan’s method makes use of a reaction between the indicator and the precipitate formed during the titration. A dye such as dichlorofluorescein is the indicator, and exists as an anion in solution. In a solution of chloride, since chloride ions are in excess, they form the primary layer on the precipitate, with the cations of sodium held as the secondary layer. On completion of the reaction, at the end point, the silver ion is in excess. As a result, the primary layer is now the silver ion which is positively charged and attracts the anion of the indicator to form the secondary layer. The color of the free indicator is different from that of the adsorbed indicator. This provides a visible end point to signal that the reaction is complete. • Other adsorption indicators are - • Dichlorofluorescein, • Di-iodo-diethylfluorescein • • My Twitter link • https://twitter.com/pikai_1998?s=09 • • INTRO MUSIC • Track: Kisma - Fingertips [NCS Release] • Music provided by NoCopyrightSounds. • Watch: • Kisma - Fingertips | House | NCS - Co... • Free Download / Stream: http://ncs.io/FingertipsYO • OUTRO MUSIC • Song: Fredji - Happy Life (Vlog No Copyright Music) • Music provided by Vlog No Copyright Music. • Video Link: • Fredji - Happy Life (Vlog No Copyrigh...

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