Separating Ions (1 Viewer)

[miss_pixie]

Hey, I really need some help please
I've got a prac tomorow about identifying unknown ions.
We'll be given two unknown solutions, one with an unknown cation & anion and the other with 2 unkown cations & an anion.

I think i'm right with the single ones, but ive got no info on how to separate the cations for the second unknown solution.

Any suggestions would be great thanks

 

[xiao1985]

use the flow chart in cchsc..

add hcl, if ppt, add EXCESSIVE hcl to COMPLETELY remove Ag+ and Pb2+ and vise n versa...

 

[miss_pixie]

Thanks That should help.. Do u add NH3 to the residue if u filter out the precipitate formed with excess HCl? Or do u take a new sample to add NH3?