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Unformatted text preview: added 1 or 2 drops of 0.1 M iodine solution to 5 mL water and added a few crystals. This caused the solution to turn from yellow to clear. In our third test, we dissolved a small amount of the product in 5 mL of water and added 1 mL of 6 M HCl. We noticed a pungent odor coming from the test tube. Conclusion When preparing the sodium thiosulfate pentahydrate, some of the product was lost in the production. As part of the experiment, we calculated the theoretical yield of the product and our percent yield. We saw that a 100% yield was not obtained. We determined that this could have been from some splattering that occurs naturally in the lab. Also the filtration process was not perfect, and some solution was lost there as well. These caused the percent yield to be lower than expected....
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- Spring '08
- Chemistry, Sodium, Chemical reaction, Sodium chloride, Sodium thiosulfate