*13-19. Titration of the 1₂ produced from 0.1142 g of primary-standard KIO3 required 27.95 mL of sodium thiosulfate. IO₂ + 51¯ + 6H* → 31₂ + 3H₂O I₂ + 2S₂O3²- →21¯ + S₂O²¯ Calculate the concentration of the Na₂S₂O3.

13-19. Titration of the 1₂ produced from 0.1142 g of primary-standard KIO3 required 27.95 mL of sodium thiosulfate. IO₂ + 51¯ + 6H → 31₂ + 3H₂O I₂ + 2S₂O3²- →21¯ + S₂O²¯ Calculate the concentration of the Na₂S₂O3.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 15.BCP

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*13-19. Titration of the I₂ produced from 0.1142 g of
primary-standard KIO3 required 27.95 mL of sodium
thiosulfate.
103¯ + 51¯ + 6H* → 31₂ + 3H₂O
I₂ + 2S₂O3 → 21¯ +S4O²¯
Calculate the concentration of the Na₂S₂O3.
0.1146 M

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