I have prepared a solution of Nickel Chloride by dropping some Nickel metal shavings in concentrated HCl, and after a few days, the result is a bright, dark emerald green liquid, that still contains a lot of hydrochloric acid. What would be the best way to neutralize the HCl without contaminating the solution with another salt?

 

What i mean to say is the logical choice would be to add some NaOH until I get a 7.0 PH, but it would create unwanted NaCl in my relatively pure solution (I used reagent grade HCl and 99.9% pure Ni).

 

I thought of boiling off the solution but I don't know if I would succesfully drive off all the remaining HCl from my NiCl2. And I don't think that fractional crystallization would work since NiCl2 and NaCl are both highly soluble. Anyway, I have never tried that process.

 

Thanks for any and all advice.

 

Robert

You could try to use Ni(OH)₂.