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Re: thoughts on NutriDine
finallyfaith Views: 7,570
Published: 13 years ago
This is a reply to # 890,310

Re: thoughts on NutriDine

i am curious about gold and Iodine and how they interact. i have been enjoying the C gold i got quite a bit lately. i do find it interesting that of all the halides gold combines with Iodine to form the most stable compound, more stable than even gold and bromine. in fact, Iodine so readily combines with gold that iodine solutions are used to leach gold out of gold rich ore, then the iodine is stripped, leaving just the gold. i haven't a clue if taking the gold and iodine together is a good idea, but i admit that its intriguing nonetheless. (au = gold)

Of the halides, iodine exhibits the widest range oxidation and pH conditions for stabilization of gold complexes. At [Au] = 10-5 M and [I] = 10-2 M, AuI2- is stable between 0.51 V and 0.69 V and at pH < 12. AuI4- is stable above 0.69 V and is stable over a larger set of potential and pH than AuBr4- or AuCl4-. Gold Iodide complexes are the most stable relative to the halide complexes in aqueous solutions.


The formation of the I3- allows for high solubility of iodine in solutions containing Iodide ion. Thus, I3- can serve as an oxidant for gold according to these half-cell reactions

(Anodic) Au + 2 I- = AuI2- + e

(Cathodic) I3- + 2e = 3 I- _

(Net Reaction) 2Au + I3- + I- = 2AuI2-

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