Titration of the I2 produced from 0.2645g of primary standard KIO3 required 45.36mL of sodium thiosulfate. Calculate the concentration of the Na2S2O3 in M. IO3- + 5I- + 6H+ --> 3I2 + 3H2O I2 + 2S2O32- --> 2I- + S4O62- KIO3 mw = 214.001g/mol

Titration of the I2 produced from 0.2645g of primary standard KIO3 required 45.36mL of sodium thiosulfate. Calculate the concentration of the Na2S2O3 in M. IO3- + 5I- + 6H+ --> 3I2 + 3H2O I2 + 2S2O32- --> 2I- + S4O62- KIO3 mw = 214.001g/mol

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter16: Applications Of Neutralization Titrations

Section: Chapter Questions

Problem 16.20QAP

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Question

Titration of the I2 produced from 0.2645g of primary standard KIO₃ required 45.36mL of sodium thiosulfate. Calculate the concentration of the Na₂S₂O₃in M.

IO₃^- + 5I^- + 6H⁺ --> 3I₂ + 3H₂O

I₂ + 2S₂O_3^2- --> 2I^- + S₄O₆^2-

KIO₃ mw = 214.001g/mol

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