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Unformatted text preview: possible unknowns than comparing it to the percent of water in Unknown D. The complete analysis determined that Bischofite was the hydrate (MgCl2*H20). Scenario 2 The purpose of this experiment was to determine if Fe2+ or Fe3+ was being reacted against Copper Sulfate. We figured out the amount of Copper Sulfate needed to react with Fe2+ and then placed a little bit more than that amount. 1g of Fe2+ needed 2.858 g of Copper Sulfate to react while 1g of Fe3+ needed 4.287 g. Thus we put in 3 grams of Copper Sulfate, which was a point in-between both Fe3+ and Fe2+. The solution turned clear and there was no excess iron, so the steel wool was Iron (II). This was because all the Iron reacted. If there were excess iron, then the unknown would have been determined to be Iron (III)...
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- Spring '10
- Chemistry, copper sulfate, original mass