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15 Φεβ 2018 · Zinc and iodine, when mixed with distilled water in a test tube, will react spontaneously and exothermically to produce aqueous zinc iodide. The aqueous zinc iodide can be decomposed into its elements using a simple electrolysis apparatus.
An exothermic redox reaction occurs, forming zinc iodide, which can be obtained by evaporating the solvent. Zn + I 2 → ZnI 2. The experiment can be extended to show the decomposition of a compound into its elements.
From their understanding of double replacement reactions, solubility rules, and molarity, students hypothesize that barium iodide reacts with zinc sulfate to produce zinc iodide. The equation for this reaction is BaI2(aq) + ZnSO4(aq) ZnI2(aq) + BaSO4(s)
Purpose. react zinc with iodine to form zinc iodide then observe the data to confirm the Law of Conservation of Mass. Also, use electrolysis to separate zinc iodide back into the elements zinc & iodine. Formulas to Know.
1 Ιουλ 2003 · The inquiry-based experiments center on alternate reaction pathways involving a second synthesis of zinc iodide and a side reaction that produces zinc hydroxide.
1 Σεπ 1995 · The purpose of this article is to discuss two colorful reactions not widely used by chemical educators in high schools or college chemistry laboratories: The synthesis of zinc iodide from...
I) Electrolysis of zinc iodide solution: explanation using the particle level. Work with a partner! Your tasks: Describe which particles are shown inside the solution in P1. Explain why there are different numbers of each type of particle in P1. Explain why the particles move into different directions in P1.
