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Chemistry / Re: Rare earth metals (HCl neutralization)
« on: 12/08/2021 07:48:26 »
As the title suggets, my experiment is about the rare earth metals.
Other components must be removed for purification.
The respective waste is usually first dissvoled in acidic form with 10 M HCl.
Secondly, the rare earth metals are precipitated and detached in the form of their oxalates.
After the decomposition, the pH value must be raised to pH 1 by adding soda or potash lye so that the precipitation works.
Now I have to give a justified estimate of how high the proportion of Hcl should be neutralized before the precipitation.
Thanks in advance!
Other components must be removed for purification.
The respective waste is usually first dissvoled in acidic form with 10 M HCl.
Secondly, the rare earth metals are precipitated and detached in the form of their oxalates.
After the decomposition, the pH value must be raised to pH 1 by adding soda or potash lye so that the precipitation works.
Now I have to give a justified estimate of how high the proportion of Hcl should be neutralized before the precipitation.
Thanks in advance!