CHEM 1951 Lecture Notes - Silver Bromide, Silver Iodide, Tap Water

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5 Jul 2013
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Curt kim, jonathan lee, keshav mantha & bobbie sheng. Goal: the goal of this experiment was to identify group iia metals, group viia nonmetals, and transition metal ions based on their reactions with different salts and the precipitates they produced. For part a, four test tubes were filled in with solutions containing sodium halide salts. A solution of ca(no3)2 was added to the four test tubes. Nh3 (ammonia) was added each test tube that produced a precipitate. Na2s2o3 was added to the test tubes that precipitated again with the ammonia. With four new test tubes, ten drops of the four sodium halides were added again. The same procedure was done as before but with agno3 instead of ca(no3)2. In part b, four test tubes were filled with solutions containing alkaline earth metal ions. A solution of h2so4 was added to each test tube.