Sodium thiosulfate, Na2S2O3, is an important reagent for titrations. Its solutions can be standardized by titrating the iodine released when a weighed amount of potassium hydrogen iodate, KH(IO3)2 (389.912 g/mol), is allowed to react with excess potassium iodide in acidic solutions. The net ionic equations are: 8. 10, + 51+6 H* → 3 1½ + 3 H2O ½ + 2 S20, →21 + S40,²- production of iodine from KH(IO3)2: titration of iodine: What is the molarity of a sodium thiosulfate solution if 34.29 mL are required to titrate the iodine released from 0.1847 g of KH(IO;)2?
Sodium thiosulfate, Na2S2O3, is an important reagent for titrations. Its solutions can be standardized by titrating the iodine released when a weighed amount of potassium hydrogen iodate, KH(IO3)2 (389.912 g/mol), is allowed to react with excess potassium iodide in acidic solutions. The net ionic equations are: 8. 10, + 51+6 H* → 3 1½ + 3 H2O ½ + 2 S20, →21 + S40,²- production of iodine from KH(IO3)2: titration of iodine: What is the molarity of a sodium thiosulfate solution if 34.29 mL are required to titrate the iodine released from 0.1847 g of KH(IO;)2?
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Chapter4: Chemical Reactions
Section: Chapter Questions
Problem 4.94QP
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Transcribed Image Text:Sodium thiosulfate, Na2S203, is an important reagent for titrations. Its solutions can be standardized
by titrating the iodine released when a weighed amount of potassium hydrogen iodate, KH(IO3)2 (389.912
g/mol), is allowed to react with excess potassium iodide in acidic solutions. The net ionic equations are:
8.
I0; + 51+ 6 H* → 3 I2 + 3 H2O
I + 2 S20; → 21+ S406²
production of iodine from KH(IO;)2:
2-
titration of iodine:
What is the molarity of a sodium thiosulfate solution if 34.29 mL are required to titrate the iodine released
from 0.1847 g of KH(IO3)2?
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