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Precipitation Reaction

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hmx9123:
Is this a mistake, K2I?  Iodine with a -2 charge?  I know iodine has some funky chemistry with the triiodide ion, etc., but are these feasible?  I haven't heard of it before, and it's not in the CRC.  Also, although PbI exists, what redox is going on here?  Shouldn't it be PbI2?

Wouldn't your overall equation be:

Pb3(PO4)2 + 6 KI --> 3 PbI2 + 2 K3PO4

arnyk:
Oops.  :D

Right, it's a halide..1- charge...wasn't quite thinkin' there eh?

Ok then, I guess the easiest way to cover that up would be to change the element. ;)

Wow that's just really embarassing... ::)

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