Titration of the I2 (253.81 g/mol) produced from 0.2091 g of primary standard KIO3 (214.001 g/mol) required 29.62 mL of sodium thiosulfate, Na2S2O3 (158.11 g/mol). IO3– +5I– +6H+ →3I2 +3H2O I2 + 2S2O32– → 2I– + S4O62– Based on the above reactions, calculate the molarity of the Na2S2O3

Titration of the I2 (253.81 g/mol) produced from 0.2091 g of primary standard KIO3 (214.001 g/mol) required 29.62 mL of sodium thiosulfate, Na2S2O3 (158.11 g/mol). IO3– +5I– +6H+ →3I2 +3H2O I2 + 2S2O32– → 2I– + S4O62– Based on the above reactions, calculate the molarity of the Na2S2O3

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 (253.81 g/mol) produced from 0.2091 g of primary standard KIO3 (214.001 g/mol) required 29.62 mL of sodium thiosulfate, Na2S2O3 (158.11 g/mol).

IO3– +5I– +6H+ →3I2 +3H2O I2 + 2S2O32– → 2I– + S4O62–

Based on the above reactions, calculate the molarity of the Na2S2O3.

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