Chemistry lab paper sherlock holmes experiment Essay Example

we mixed vinegar with the Alkali-Seltzer and baking soda, it had a bubbly and foaming reaction. In the fourth test, we added half a milliliter of iodine 2 solution to each test tube, causing the flour to turn black and the vitamin C and salt to turn orange with no physical or chemical reaction. Baking soda turned an orange-brown color with no reaction, and when we tested our mystery powder (powder C), it did not dissolve in water, turned the litmus paper blue, and created a foaming reaction when mixed with vinegar. Our group had powder C in this experiment for our Sherlock Holmes Mystery.After mixing the iodine solution, we observed no reaction and the solution turned to a dark brown/black color. Adding baking soda yielded no reaction yet resulted in an even darker shade. Having tested the mystery powder, our next task was to identify the culprit who stole Kamala Jackson's pad. Ruby, Alma, Manly, and Beau were our four suspects who were present at the time of the theft. By comparing common powders to the mystery powder, we were able to eliminate flour, vitamin C, and salt as possible matches. This left us with the Alkali-Seltzer and baking soda, both of which bore striking similarities to the mystery powder. Our investigation led us to believe that Beau or Alma were responsible for stealing the pad. Ultimately, we determined that Beau was the culprit due to evidence linking him to Alkali-Seltzer tablets containing citric acid and sodium bicarbonate (baking soda).