A solution contains 0.25 M Ni(NO3)2 and 0.25 M Cu(NO3)2. A. Can the metal ions be separated by slowly adding Na2CO3 aq solution? Assume that for successful separation 99% of the metal ion must be precipitated before the other metal ion begins to precipitate, and assume no volume change on addition of Na2CO3 solution.     Ksp  of CuCO3 = 1.4 x10-10    Ksp  of NiCO3 = 1.42X 10-7

Biochemistry
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Chapter1: Biochemistry: An Evolving Science
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A solution contains 0.25 M Ni(NO3)2 and 0.25 M Cu(NO3)2.

A. Can the metal ions be separated by slowly adding Na2CO3 aq solution? Assume that for successful separation 99% of the metal ion must be precipitated before the other metal ion begins to precipitate, and assume no volume change on addition of Na2CO3 solution. 

   Ksp  of CuCO3 = 1.4 x10-10

   Ksp  of NiCO3 = 1.42X 10-7

B.  If you need to redissolve the salt that was first precipitated, what pH will you use and why ?

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