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t itracija baze kiselinom uz metiloran ž

t itracija baze kiselinom uz metiloran ž. t itracija kiseline bazom uz metiloran ž. permanganometrijska titracija. t itracija kiseline bazom uz fenolftalein. Jod ometrija. - zasnovana na reakciji:. 2I - - 2e I 2. - povratna reakcija. - nedovoljno brza.

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t itracija baze kiselinom uz metiloran ž

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  1. titracija baze kiselinom uz metiloranž titracija kiseline bazom uz metiloranž permanganometrijska titracija titracija kiseline bazom uz fenolftalein

  2. Jodometrija - zasnovana na reakciji: 2I- - 2e I2 - povratna reakcija - nedovoljno brza - nepostojan rastvor jodida - nema pogodnog indikatora INDIREKTNO ODREĐIVANJE: 1. oksidac. supstanca + KI u višku 2. titracija nastalog joda rastvorom tiosulfata: KBrO3 + 6KI + 6HCl KBr + 3I2 + 6KCl + 3H20 I2 + 2Na2S2O32NaI + Na2S406 - titraciono sredstvo: Na2S2O3 - sekundarna standardna supstanca Skrob STANDARDIZACIJA

  3. Jodometrijsko određivanje hroma: K2Cr2O7 + 6KI + 14HCl 2CrCl3 + 3I2 + 8KCl + 7H20 I2 + 2Na2S2O32NaI + Na2S406 jodometrija (standardizacija tiosulfata) jodometrija (određivanje hroma)

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