Hello
I try to solubilize some rare earth oxides like Yb2O3, Eu2O3, Nd2O3.
I put Yb2O3(0.05g) in hydrochloric acid (12.08mol/L) It forms white solution.
I put Eu2O3(0.026g) in hydrochloric acid (12.08mol/L) it forms limpid solution.
I put Nd2O3 (0.017g) in hydrochloric acid (12.08mol/L) it forms limpid solution.
The volume of hydrochloric acid was 4mL.
Are this oxide solubilized completely or not??
What is the reaction between this oxides and HCL??
Any method to prove the solubilization of this oxides in hydrochloric acid!!
Thanks
Eu and Nd would be expected to form water-soluble chlorides; HCl is used to extract rare earths (in general, sometimes following alkali fusion) from their ores. Yb will be problematic; YbCl3 can even be used as a tracer for solid phase food as it digests through the mammalian gut -- it does not solubilize! You may also be overloading with Cl(-), such that the common ion effect suppresses the solubility of the chlorides; try backing off on your acid strength, and heating instead, perhaps.
Thanks
You mean that the Eu and Nd are solubilized completely by coming limpid solution???
Can I solubilize YB by nitric acid
Solubilized, yes. With minor amounts of suspended solids. They may clear with dilution or lower concentrations of HCl. Check the relative solubility of YbNO3 and YbCl3 in the CRC handbook -- the same comment on common ion solubility suppression would apply, you may not need conc. HNO3!
Dear Stanton
What do you mean with minor amount s of suspended solids??
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