Fourth Lab- Zinc and Iodine Lab

For our last lab we summed up all we learned and applied it to one lab. We started by taking vinegar and mixing it with 2.14 grams of iodine. Then we added 2.39 grams of zinc to the reaction flask. Then we mixed until a chemical reaction occurred. The liquid went from brown to clear and the temperature increased. we took the liquid and solid leftover from the reaction and we heated them to eliminate any water in it. Once the water was gone we took the mass to see how much Zinc reacted with Iodine.

CER- In this reaction we found out that the Zinc makes 2 bonds with Iodine. When we took the after measures we calculated the mass of the particles to see how to make the bonding pattern. Since we started with 2.39 grams of zinc and 2.14 grams of iodine. We found the how much moles of zinc and iodine we have. Then we took the molar mass of both to determine the moles. Once we got 0.03 moles of Zinc and 0.01 moles of iodine. Then we divided them by to get 2.16 which can be rounded to 2 therefore we can assume there were 2 bonds. This is also proven by the fact that there was leftover zinc in the bottom of the flask. When we finished the experiment we took a battery and we separated the new zinc iodide. In one wire we had a lot of dark colored iodine and in the other there was a small amount of zinc. We can assume that in the bond there was more iodine than zinc.

Connection to Big Problem- In this lab we practiced how to correctly create bonding patterns using the mass and the moles. This was also done in the Magnesium oxide lab. In our pipe problem we can use this information to find correct bonding pattern.