Department of Chemistry University of Missouri-St. Louis Practice Exam II Chem. 2633 1A. If the boiling temperature of 1,3-diphenylacetone is 330 C
University of Missouri-St. Louis
Practice Exam II
If the boiling temperature of
1,3-diphenylacetone is 330 Â° C at 1 atm pressure, at what
approximate pressure would you expect it to boil at 280 Â° C?
Explain why if the atmospheric pressure above water drops below 4 mm of mercury, the
water eventually freezes and then disappears.
In the synthesis of methyl salicylate, why was the organic layer washed with water?
Suppose you were asked to dete
mine whether a liquid isolated from a site suspected of
arson was an accelerant. What you do to identify this material based on what you have learned
You take a melting point of your unknown and find that it melts some 10 Â° C lower than
the value expected for the compound believed to be. What would you do?
F Would you do the same thing if the compound in E above melted 15 Â° C higher? Why?
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