Results: Zinc Metal - Iodine - Iodide + Triodide + Zinc Ion + Focus Questions: 1. Is there a way to put energy into Zinc Iodide in order to regain the elements, zinc and iodine? If there is a way, how does it happen? Yes, this can be done through electrolysis using a battery and exposed wire tips. Take sample of Zinc Iodide and dissolve in solution.
The purpose of the lab was to determine which reactant was the limiting reactant, and to see how much of the other reactant was used. The true molarity of a compound can be defined as the amount of moles per liter of that substance. The equation of this single displacement chemical reaction done during this lab is 2Al(s) + 3CuCl(aq) → 3Cu (s) + 2AlCl2 (aq). In the reaction, the solid Aluminum replaces the Copper in Copper (II) Chloride to produce solid copper, and Aluminum Chloride. In order to find which reactant is the limiting reactant, an equation based on the molarity of the Copper (II) Chloride may be used, or the products of the reaction may be observed.
Lesson written by Carolina Sylvestri Experiment: Reaction Between Ions in Aqueous Solutions The Monster Mash Background: Ionic solids dissolve in water to form aqueous solutions which conduct electricity. These solutions contain both positive and negative ions in such numbers that their net electric charge is zero. In this experiment, you will mix various ionic solutions, two at a time, to determine which combinations form precipitates. Knowing which ions are present makes it possible to deduce which of the possible ion combinations are responsible for the precipitates. From your data table, it will then be possible to generate a solubility table.
| Centrifuge: used to isolate the solid from the solution | . Focus Questions: When acidified water is not used in the zinc and iodine synthesis, zinc hydroxide is formed. How can it be identified based on the amphoteric nature. When zinc and iodine react without the presence of acetic acid in the water, zinc hydroxide forms. This is evident because the substance tested positive for both the acid test and the base test for zinc hydroxide.
You now have sao mL of a zinc iodide aqueous solution. On the label of the flask you write (there ca'n be many different possibilities): ( tl ;)'II I ! Exercise 2. Two students need zinc iodide that is in solution in the following amounts: Student 1 : 0.43 g of zinc
In this lab, iron had to replace copper in a copper sulfate solution in a single replacement reaction. On this lab our objective was to find out what copper and iron we were using. We had to find if we were using iron +2 or iron+3 and copper +1 or copper +2. There were 4 possible reactions: the first one could have iron +2 and copper +1. The second one could have iron +2 and copper +2.
A balance can measure mass, which is best, defined as the amount of matter in a sample. In order to measure an objects volume, the student will have to use water displacement for irregular metals and various formulas to find the volume of three-dimensional objects. The density, which is the ratio of the mass over the volume, can be used to identify a metal or element. There are multiple reasons as to why the student will perform this lab. First off is to test the student’s knowledge on using measurement tools accurately when measuring the mass and volume of the metals in this specific lab.
We’re specifically looking into how much product will be created after conducting experiments with various different concentrations of Iodine and Zinc. One of the things we tested for was the production of a “white solid” which acted as our precipitate. Another key element we kept an eye out for was excess zinc, which showed us how much of the zinc was reacted. During our experiment we colleged exactly the amounts we needed for our group, no decimal point less! We also collected an accurate amount of acidified water, used to start the reaction.
It has been noticed that it has a specific medical treatment in such a way it will treat that type of infection or dieses. Chelation therapy is normally used to treat metal poisoning. These metal poisoning include lead, acute mercury, iron, arsenic, uranium, plutonium and other forms of poisoning metal. Depending on the type of the poison and the type of agent, biological chelation therapy agents will be administered or injected either intramuscularly or intravenously. Each and every time testing urine for metals one must make sure that she/he tests it before injection or administration of any chelation therapy agent.
- signs of chemical change = changes the shape and color, creates a gas, distributes heat, Etc. - Chemical Change= Substance is formed into a completely new substance 2. Hypothesis: If the copper is being tested in these metals ( Copper, Magnesium and cupric chloride) then it would be the least reactive out of magnesium and zinc because it is the lowest among the three on the activity series. 3. Experimental Design: - Independent Variable: different types of metals: magnesium, zinc and Copper - Dependent Variable: amount of reactants observed for each metal - Control : The Air -Constants: The amount of chemical solutions, the time the metals were in the chemical solutions and size of each metal during the experiment 4.