CHEM 1214 Lecture Notes - Lecture 8: Bunsen Burner, Thiosulfate, Iodine
21 Feb 2018
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The purpose of this experiment is to use sodium thiosulfate pentahydrate (na- This substance allows for the observation of changes in color when in reaction with other substances in the qualitative tests. Bunsen burner must be looked after and not left unsupervised. If the bunsen burner is too high, the solution can splatter and safety goggles must be worn to prevent any potential accidents. Make sure to properly dispose of the mixed; discard it into inorganic synthesis bottle. Gloves should be worn at all times, but especially when dealing with hcl and other liquids. Theoretical yield- (12. 6g)/ 126g = . 10 mol of sodium thiosulfate pentahydrate. 10 mol x 248g sodium thiosulfate pentahydrate = 24. 8 g. Percentage yield- ((. 407g)/ (24. 8 g)) x 100 = 1. 64% The theoretical yield of sodium thiosulfate pentahydrate is 24. 8g. In contrast, the actual yield after crystallization was . 407g, with which we calculated our percentage yield to be 1. 64%.
