chem lab 1

chem lab 1 - Determination of Chemical Formulae: The...

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Determination of Chemical Formulae: The Reaction of Zinc and Iodine By Robert Dutchen Lab Instructor: Samik Jhulki September 14, 2010 Purpose: To validate the Law of Mass Conservation through the synthesis of zinc iodide by reacting elemental zinc and iodine
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Procedure: A dry, large test tube was massed. Elemental zinc was added, resulting in a mass of 46.082 g, and Iodine crystals were added, resulting in a mass of 46.000 g, respectively. An acidic solution of 10 mL distilled water and 6 drops of 6 M Acetic Acid was prepared. 5 mL of this solution was added to the zinc and iodine mixture. A test tube with a boiling stone was massed. The zinc iodine mixture was decanted into the tube with the boiling stone a total of 3 times with 1 mL aliquots of the acid mixture. A forth decanting was poured down the sink. The zinc granules were dried under the Bunsen burned and massed. Two ends of an electrode attached to a battery were placed in the zinc iodine product.
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chem lab 1 - Determination of Chemical Formulae: The...

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