The mineral claudetite contains the element arsenic in the form of arsenic(III) oxide, As 2 O 3

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The mineral claudetite contains the element arsenic in the form of arsenic(III) oxide, As2O3. The As2O3 in a 0.562-g sample of the impure mineral was converted first to H3AsO3 and then titrated with a 0.0480 M solution of I3, which reacts with H3AsO3 according to the following balanced net ionic equation

H,AsO(aq) + 3 HO(l) + 1 (aq)  H3ASO(aq) + 2 HO+ (aq) + 3 1(aq)

If the titration required 45.7 mL of the I3 solution, what is the percentage of As2O3 in the mineral sample?

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Chemistry And Chemical Reactivity

ISBN: 9780357001172

10th Edition

Authors: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

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