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Unformatted text preview: Re-filter through the same paper. 10. Continue pulling a vacuum through the precipitate on the filter paper for a few minutes after all the liquid has been filtered to help pre dry the solid 11. Place the filter paper with solid on it back on the evaporating dish and place in the oven for 20 minutes 12. After 20 minutes place everything in the Desicooler. 13. When the materials cool weight and record 14. Place about 2 mL of the filtrate in each of two small test tubes. 15. To the first test tube add several drops of 1M Na 2 CO 3 and record. 16. To the second add several drops of the Ba mixture 17. These tests will be used to determine the limiting reactant....
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- Spring '08