Chemical Forums

Chemistry Forums for Students => Inorganic Chemistry Forum => Topic started by: cofi on March 22, 2006, 09:31:56 AM

Title: synthesis of sodium iodide?
Post by: cofi on March 22, 2006, 09:31:56 AM

I wanted to try Finkelstein's reaction but realised I had no NaI...
and being unable to get any, I decided to make some :)
so I thought about something like this:

KI + AgNO₃ -> AgI(s) + KNO₃
2AgI(s) + 2NaOH -> 2NaI + Ag₂O(s) + H₂O

how could I turn Ag₂O(s) into AgNO₃ again? :)

TIA

Title: Re:synthesis of sodium iodide?
Post by: AWK on March 22, 2006, 11:07:14 AM

2AgI(s) + 2NaOH -> 2NaI + Ag2O(s) + H2O

This reaction will not work

Title: Re:synthesis of sodium iodide?
Post by: cofi on March 22, 2006, 11:44:34 AM

and what about AgI + H₂O₂ in a basic solution?
that should work...
and I would only get Ag(s), which I can easily filter out...