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If a 0.100 M solution of NaOH is added to a solution containing 0.200 M Ni2+,...

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Chemistry

If a 0.100 M solution of NaOH is added to a solution containing0.200 M Ni2+, 0.200 M Ce3+, and 0.200 MCu2+, which metal hydroxides will precipitate first andlast, respectively? Ksp for Ni(OH)2 is6.0x10?16, for Ce (OH)3 is 6.0 x10?22, and for Cu(OH)2 is4.8x10?20.

A) Ni(OH)2 first, Cu(OH)2 last
B) Cu(OH)2 first, Ni(OH)2 last
C) Ni(OH)2 first, Ce(OH)3 last
D) Cu(OH)2 first, Ce(OH)3 last
E) Ce(OH)3 first, Cu(OH)2 last

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Answer & Explanation Solved by verified expert
3.9 Ratings (421 Votes)
For NiOH2 Ni2 2OH Ksp 60x1016 Ni2 0200M OH 0100M Hence ionic productIP Ni2xOH2 0200x01002 000200 M2 Since IPKspprecipitation will occur Now OH required to precipitate NiOH2 can be calculated as Ksp    See Answer
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