Hi all. another SPA question.
Potassium Hexocyroferrate will reaction with:
Fe2+ to form pale blue ppt,
Fe3+ to form prussian blue ppt,
Cu2+ to form reddish brown ppt,
Ni2+ to form light green ppt,
and Zn2+ to form white ppt.
This is found in my SPA manual. My question is, are there any other cations that will result in oberservable ppt which are not listed above? Like say maybe zinc, lead etc
Originally posted by Lord dejavu:Hi all. another SPA question.
Potassium Hexocyroferrate will reaction with:
Fe2+ to form pale blue ppt,
Fe3+ to form prussian blue ppt,
Cu2+ to form reddish brown ppt,
Ni2+ to form light green ppt,
and Zn2+ to form white ppt.
This is found in my SPA manual. My question is, are there any other cations that will result in oberservable ppt which are not listed above? Like say maybe zinc, lead etc
There are certainly other cations the cyano ligands (ie. the -CN ion, with the negative formal charge on the C atom which is hence the dative bond donor) can complex with, but the ones listed in your SPA manual are just aboutĀ theĀ ones you need to know for your SPA. You're not required to memorize these colours (relevant data will always be provided), so don't worry too much about it.
Read Wikipedia for more details if you're interested :