Chemical Forums

Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Konfusion on February 27, 2006, 03:18:58 PM

Title: oxide differentiation
Post by: Konfusion on February 27, 2006, 03:18:58 PM

Hello Everyone,
                     i got to determine the concentration of BaO, CaO and Na₂O in a matrix of BaCl₂, CaCl₂ and NaCl.  How could i get to separate eahc and get their content?

Chris

Title: Re:oxide differentiation
Post by: Alberto_Kravina on February 27, 2006, 03:25:22 PM

Quote from: Konfusion on February 27, 2006, 03:18:58 PM

Hello Everyone,
 i got to determine the concentration of BaO, CaO and Na₂O in a matrix of BaCl₂, CaCl₂ and NaCl.  How could i get to separate eahc and get their content?

Maybe with a gravimetric analysis, you could precipitate the Ba²⁺ as BaSO₄, the Ca²⁺ with oxalate and sodium...hmmmm...hexahydroxoantimonate(V) or uranylacetate? I don't know if it works for sodium ions...

hope I helped, a little . :P

Title: Re:oxide differentiation
Post by: Konfusion on February 27, 2006, 03:36:56 PM

But dont there will be a problem with the chloride form of those salt.

Title: Re:oxide differentiation
Post by: Borek on February 27, 2006, 04:06:53 PM

If you add water to the mixture you can determine sum of oxides with acid/base titration.

Alternatively you may determine sum of chlorides using argentometry.

Title: Re:oxide differentiation
Post by: Konfusion on February 28, 2006, 07:25:14 PM

ok, i already do that before, and wanted some fresh idea on how i could determine each species exactly.

Chris

Title: Re:oxide differentiation
Post by: kevins on March 03, 2006, 11:22:58 AM

You can determine the metals concentration by the use of AAS, XRF, ICP instrument . ;)