Pre-Lab Assignment 1. A 0.1017 g sample of KBrO3 was dissolved in dilute acid and treated with...

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Chemistry

Pre-Lab Assignment
1. A 0.1017 g sample of KBrO3 was dissolved in dilute acid andtreated with an excess of KI. BrO3Â¯ + 9IÂ¯ + 6H+ BrÂ¯ + 3I3Â¯ + 3H2OThe generated I3Â¯ required 27.39 mL of a Na2S2O3 solution to reduceit to IÂ¯. Use the above equation and those found in theintroduction to determine the molarity of the Na2S2O3 solution.
2. The following data was obtained for an iodometric titrationof an ascorbic acid tablet.
Mass of tablet: 1.2381 g
Mass of sample analyzed: 0.2483 g
Vol. of 0.0166 molâ€¢L-1 KIO3: 25.00 mL
Vol. of 0.0198 molâ€¢L-1 Na2S2O3 to reach endpoint: 11.01 mL
Using the equations found in the introduction, determine: themass of ascorbic acid in the sample analyzed and the mass ofascorbic acid contained within the tablet.

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1 A 01017 g sample of KBrO3 was dissolved in dilute acid and treated with an excess of KI BrO3 9I 6H Br 3I3 3H2O The generated I3 required 2739 mL of a Na2S2O3 solution to reduce it See Answer

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