Which of the following ion concentrations could be determinedby a redox titratio

Question

Which of the following ion concentrations could be determinedby a redox titration using nitric acid? Assume the use of asuitable indicator. A. Br- B. Ni2+ C. Fe2+ D. Mn2+ The answer is C, but I don't know how to arrive to theanswer. Which of the following ion concentrations could be determinedby a redox titration using nitric acid? Assume the use of asuitable indicator. A. Br- B. Ni2+ C. Fe2+ D. Mn2+ The answer is C, but I don't know how to arrive to theanswer. The answer is C, but I don't know how to arrive to theanswer.

Explanation / Answer

By Using Redox tutration We Can Determine TheConcentration of Fe+2 With Nitric Acid . Because of In Nitric Acid Oxidation StateOf N is +5 . So It Acts As good Oxidising Agent . ItOxidises  Fe+2 to Fe+3. And itself Reduses from +5 to +3 . In this Reaction We can Use Redox IndicatorsAre 1) Nitrofinanthroline [ E0 = 1.25 V] 2) 1,10 finanthroline [ E0 = 1.06 V] 3) 2,2' Bipyridine Based on the  E0 Values AmongAbove three one of the Redox indicator will be used .

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