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Unformatted text preview: were conducted to ensure accuracy. The results are displayed in the figure below. Trial Start Complete 1 86 oC 90 oC 2 88 oC 91 oC The average of the range was taken. The calculations are as follows: (T1 s + T2 s )/2 = (86 oC + 88 oC )/2 = 87 oC (T1 c + T2 c )/2 = (90 oC + 91 oC )/2 = 90.5 oC The average range was determined to be 87 oC to 90.5 oC Conclusion: Reducing the procedure led to a 42.7 percent yield, which is about half of what was expected. Also, the sample of alum obtained was slightly less pure than a perfectly pure sample. 2 3...
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This note was uploaded on 02/04/2008 for the course CHEM 2070 taught by Professor Chirik,p during the Fall '05 term at Cornell.
- Fall '05