LAB report - Murdock 1 Zak Murdock Pd. 8 11-16-06 This lab...

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Murdock 1 Zak Murdock Pd. 8 11-16-06 This lab was conducted to research the dehydration of a hydrate. The lab consisted of heating a copper (II) sulfate pentahydrate and determining amount of water lost during the heating process. The hydrate was heated three separate ways; in an oven, a microwave, and by a Bunsen burner. After heating the hydrate and finding the amount of water lost from the copper (II) sulfate, the calculation of the formula of the hydrate could then be determined. Upon performing this experiment one may not feel as if the dehydration of a hydrate or the calculation of the formula of a hydrate matters at all. One may only look forward to this lab because it incorporates the use of a Bunsen burner. However it is exciting to learn about which method is best for burning the water off of the copper (II) sulfate hydrate as well as producing the correct chemical formula for the hydrate. Before the experiment a hypothesis was reached that if the copper (II) sulfate pentahydrate was heated by a Bunsen burner, then it would be best dehydrated. In order to begin this experiment an amount of .5 to 1.0 grams of copper (II) sulfate pentahydrate need to be measured out and added to each a Pyrex test tube and two regular small test tubes. In this specific experiment, 1.6329 grams of copper (II) sulfate pentahydrate was measured into the Pyrex test tube, which had an initial weight of 16.9511 grams and a final weight of 18.5840 grams. .5404 grams of copper (II) sulfate pentahydrate was measured into the first small test tube, which had an initial weight of 3.4775 grams and a final weight of 4.0174 grams. 1.0349 grams was measured into the
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Murdock 2 second small test tube, which had an initial weight of 3.4391 grams and a final weight of 4.474 grams. After finding the amount of hydrate in the test tubes the dehydration process could now begin. To start the dehydration process, the small test tube with .5404 grams of copper (II) penthydrate was placed in the oven at 140 degrees Celsius. While the hydrate was being dehydrated in the oven, the Pyrex test tube was placed in a ring stand and clamp and heated with a Bunsen burner until all of the water was visibly gone. After heating the Pyrex tube it was left to cool for at least seven minutes. During the mean time the second small test tube with 1.0349 grams of hydrate, was placed in a microwave on high for 3 minutes. After three minutes the test tube needed to cool. After 22 minutes the Pyrex test tube was taken out of the oven and then cooled. After all three test tubes were cool enough to handle, it was then time to reweigh. The weight of the copper (II) sulfate in the Pyrex test tube with an initial weight of 16.9511 grams and a present weight of 17.01360 grams after being heated was now .9849 grams. The weight in the first small test tube with an initial weight of 3.4775 grams and a present weight of 3.9067 grams after being heated was .4292 grams. The weight of the second small test tube with the
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LAB report - Murdock 1 Zak Murdock Pd. 8 11-16-06 This lab...

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