Chemical Formula of a Hydrate Lab

Chemical Formula of a Hydrate Lab - Drew Rasmussen Katri...

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Drew Rasmussen Katri Truhler Chemistry 111L – 015 7 October 2010 Chemical Formula of a Hydrate A. What is the Chemical Formula of the hydrate we were given in class, and what is the percent composition of water in this compound? B. Clean and Weigh crucible a. Begin burning hydrate to break chemical bonds releasing water a.i. Weigh crucible and hydrate a.i.1. Continue burning and weighing a.i.1.a. Repeat this step 3 times C. Observations: a. The flame is blue, and closer to the base of the Bunsen burner is a hot blue cone shaped flame. The first burn did not smell, probably because the lid was on. The second burn is roaring a lot more over the Bunsen burner because the crucible has been lowered into the hottest part of the flame. The second time we burned the hydrate it produced a much more distinct smell, it is hard to describe. The second hotter burn causes the ceramic to glow orange. The cooling pad absorbs heat rapidly from the crucible. The longer the crucible was heated, the fainter the smell got. When the lid was taken off the smell became apparent again. The inside of the crucible has a yellowish tint to it. The hydrate inside the crucible on
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the last burn was now a solid chunk with very little powder in the bottom. By the
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This note was uploaded on 01/18/2012 for the course CHEM 112 taught by Professor Lemaster during the Spring '08 term at Boise State.

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Chemical Formula of a Hydrate Lab - Drew Rasmussen Katri...

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