Lab Report: The Formula of Lead (II) Iodide
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3. The ratio that yielded the greatest amount of precipitate was 1:2. This means that the experimentally determined ratio of lead ions to iodide ions in lead (II) Iodide is 1:2. Therefore the formula for lead (II) iodide that would be written from this ratio is PbI2.
4. I did get the same formula that I wrote using the criss-cross method. If one did not get the same formula, one could improve their accuracy of measurements of their precipitates by making the measurements of each of the solutions added more accurate. Rather than measuring by drops, which could vary in size every drop, you could change the experiment so that you add a fixed number of milliliters; keeping the same ratios in each test tube.
5. The precipitate produced in this experiment was lead (II) Iodide. It was yellow in color, and sank to the bottom of the test tube. The precipitate settled on the bottom because it was insoluble.
6. The procedure used in this experiment could not work for verifying the formula of any compound, because in certain reactions gasses could be released, and in this procedure, gasses are not accounted for.
5. The precipitate produced in this experiment was lead (II) Iodide. It was yellow in color, and sank to the bottom of the test tube. The precipitate settled on the bottom because it was insoluble.
6. The procedure used in this experiment could not work for verifying the formula of any compound, because in certain reactions gasses could be released, and in this procedure, gasses are not accounted for.