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Thyroxine, with structure shown below, was fused with sodium to produce a fusion solution. The resulting solution was filtered and combined with 0.1M AgNO3 which produced a yellowish-white precipitate. Isolating the precipitate and adding 2M NH3 showed that some of the precipitate dissolved. Your interpretations suggest that bromine is present in contrast to the structure. Which of the following best explains the false positive result? Do NH₂ thyroxine НО. The fusion solution was not boiled after the fusion process. OH O Potassium fluoride (KF) was not added to the fusion solution. O The sample formed carbonate precipitates because of alkaline conditions. O The sample was not reacted with enough sodium metal, causing too few iodide ions to be liberated. O The fusion solution was not acidified and boiled after the fusion process.

Thyroxine, with structure shown below, was fused with sodium to produce a fusion solution. The resulting solution was filtered and combined with 0.1M AgNO3 which produced a yellowish-white precipitate. Isolating the precipitate and adding 2M NH3 showed that some of the precipitate dissolved. Your interpretations suggest that bromine is present in contrast to the structure. Which of the following best explains the false positive result? Do NH₂ thyroxine НО. The fusion solution was not boiled after the fusion process. OH O Potassium fluoride (KF) was not added to the fusion solution. O The sample formed carbonate precipitates because of alkaline conditions. O The sample was not reacted with enough sodium metal, causing too few iodide ions to be liberated. O The fusion solution was not acidified and boiled after the fusion process.

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Thyroxine, with structure shown below, was fused with sodium to produce a fusion solution. The resulting solution was filtered and combined with 0.1M AgNO3 which produced a yellowish-white precipitate. Isolating the precipitate and adding 2M NH3 showed that some of the precipitate dissolved. Your interpretations suggest that bromine is present in contrast to the structure. Which of the following best explains the false positive result? НО. bon thyroxine NH₂ OH The fusion solution was not boiled after the fusion process. O Potassium fluoride (KF) was not added to the fusion solution. O The sample formed carbonate precipitates because of alkaline conditions. O The sample was not reacted with enough sodium metal, causing too few iodide ions to be liberated. O The fusion solution was not acidified and boiled after the fusion process.
Transcribed Image Text:Thyroxine, with structure shown below, was fused with sodium to produce a fusion solution. The resulting solution was filtered and combined with 0.1M AgNO3 which produced a yellowish-white precipitate. Isolating the precipitate and adding 2M NH3 showed that some of the precipitate dissolved. Your interpretations suggest that bromine is present in contrast to the structure. Which of the following best explains the false positive result? НО. bon thyroxine NH₂ OH The fusion solution was not boiled after the fusion process. O Potassium fluoride (KF) was not added to the fusion solution. O The sample formed carbonate precipitates because of alkaline conditions. O The sample was not reacted with enough sodium metal, causing too few iodide ions to be liberated. O The fusion solution was not acidified and boiled after the fusion process.
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