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Unformatted text preview: -, Br-, I-, CO 3 2-, and NO 3-. In test II, again there were no observable reactions. The solution remained clear/colorless, litmus did not change color, and no precipitate forms. This still leaves SO 4 2-and C 2 O 4 2-as the possible anion. In test IV the working solution forms a white precipitate in both the Barium and Calcium. This still supports both SO 4 2-and C 2 O 4 2-as the possible anion. In test V, there were no observable reactions after heating the solution. This shows that the anion is SO 4 2-, if it was C 2 O 4 2-then the solution would have turned pink then clear. In the confirmation of sulfate, a precipitate forms with barium chloride. This confirms a positive result for sulfate. While looking at the salt, I notice that each crystal is green cubic in shape. In the CRC Handbook, they describe the salt as yellow/cubic....
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- Fall '08