Observe Pb02 Diffusion into Organic Layer: Inert Effect for Lead

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In the experiment involving a test tube with two layers—chloroform at the bottom and potassium iodide (KI) at the top—PbO2 was added, which was expected to remain insoluble. Observations indicated that while PbO2 sank to the bottom and diffused into the organic layer, it did not dissolve. The key focus is on how iodine (I2) would manifest in this scenario, particularly since I2 is known to impart a purple color to the organic layer. The discussion raises questions about the appearance of iodine if PbO2 remains insoluble and its implications for the stability of Pb(IV). Participants are encouraged to share any observed color changes in the organic layer, seeking clarity on the relationship between PbO2's behavior and iodine's presence.
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In an experiment a test tube consisted of 2 layers. Bottom one was organic (chloroform) and top was KI (potassium iodide) . We added Pb02 to it and was told that it was not going to be soluble. Then we were supposed to observe the organic layer for something to happen. (Hint: The color of organic layer should indicate identity of one of products. Recall I2 is purple).

Im not sure how I2 would appear if Pb02 wasnt soluble. I did observe the Pb02 sunk to bottom of test tube and diffused into organic layer, but it didn't dissolve. So how would Iodine appear?. and what does this have to do with the stability of Pb(IV)
 
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As long as PbO2 was in contact with water solution it could react with it, even if the contact was brief.

Have you observed any color changes? Have others observed them?
 
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