The Volatile Chemist - 1-5-2014 at 18:53
In the past, I ran into two reactions involving complexes with Iron double salts containing ammonium. I need some help solving them.
1. Ferrous ammonium sulfate {FeII(NH4)2(SO4)2} and Sodium Bisulfite form a yellow-ish
tan-red-orange complex. My initial thought was the bisulfite stimulated the decomposition of the Ferrous Ammonium Sulfate to Diamminetetraaquairon(II)
Sulfate, But I'm not entirely sure...
2.Ferric Ammonium Sulfate {FeIII(NH4)(SO4)2} and Sodium Thiosulfate. This reaction, at least in the
concentrations I did it in, was very cool. As Thiosulfate is poured into the iron double salt, a deep black-brown or extremely deep red complex is
formed, but as it is poured, the complex disappears as its made, turning back to the color of the iron(III) double salt. If enough is poured in at
once, it all changes that color, but fades back to it's original color.
Any Ideas on what these complexes could be?
Thanks!
Nathan