Thanks for the replies. Assuming that all the iodide from the KI ended up in the BiOI, then the 28g of Bi(NO3)3.5H2O became the limiting reagent and
the 19.6g I got represents a yield of 96%. A good yield should be possible because this product is easier to recover from the solution than many other
salts - it is heavy and the ppt settles quickly leaving a clear supernatant solution, and also when filtered the filtrate is clear. Nevertheless a
yield of 96% seems too good to be true so maybe it it a hydrate or still retains a bit of moisture.
I do think though that my results shows that all the iodine ends up in the BiOI and that no HI remains as a product. |