Component ACGIH TLV OSHA PEL NIOSH IDLH Mexico OEL (TWA) Copper iodide (CuI)TWA: 1 mg/m3 TWA: 0.01 ppm IDLH: 100 mg/m3 TWA: 1 mg/m3 Legend ACGIH - American Conference of Governmental Industrial Hygienists NIOSH IDLH: NIOSH - …

The two I(-) ions between parentheses also are present, because we have 4 iodide ions for two copper (II) ions, so I include them in the equation. $$\ce{2CuSO4 + 4KI + 2Na2S2O3 -> 2CuI + 2K2SO4 + An example of using potassium iodide and copper(I) sulphate is shown below. All of the processes 1, 2 and 3 are taking place simultaneously. An example of using potassium iodide and copper(I) sulphate is shown below. The thiosulfate is just an added part to help illustrate the chemistry and, if … 2Cu(2+) + 2I(-) (+ 2I(-)) <----> 2Cu(+) + I2 (+ 2I(-)), where the quantities at both sides of the arrow are appreciable. It dissolves in concentrated iodides like potassium iodide . Similarly copper(I) chloride can be produced as a white precipitate (reaction described below). The copper(I) iodide is virtually insoluble in water, and so the disproportionation reaction does not happen.

Copper(I) iodide is usually made by the reduction of copper(II) salts. … I2 + 2 S2O3^(2-) → 2 I^(-) + S2O6^(2-) …Reduction of iodine to iodide …Oxidation of sulfate (VI) / thiosulfate to persulfate.

Copper(II) iodide Categories This reference contains the names of substances and descriptions of the chemical formulas (including the structural formula and the skeletal formula). This page is for the iodide ion and its salts, not organoiodine compounds.

5H 2 O] dissolves to give cupric ion (Cu 2+); in the context of a redox reaction with thiosulfate, the cupric ion acts as an oxidizing agent.

In everyday life, iodide is most commonly encountered as a component of iodized salt, which many governments mandate. Compounds with iodine in formal oxidation state −1 are called iodides. We've already seen that copper(I) iodide is produced as an off-white precipitate if you add potassium iodide solution to a solution containing copper(II) ions.

Stability and reactivity Reactive Hazard None known, based on information available Stability Light sensitive. If thiosulfate solution is used, then the Iodine is re-reduced back to Iodide and the yucky brown discolouration disappears leaving the white ppt of CuI. Molecular Formula Cu I Molecular Weight 190.45 10. An iodide ion is the ion I −. Copper does not form a stable copper(II) iodide; copper(II) iodide breaks down right away to make copper(I) iodide and iodine. When it is diluted, it makes copper(I) iodide again.