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A Solution Is Prepared by Mixing 50

Question 89

Multiple Choice

A solution is prepared by mixing 50.0 mL of 0.50 M Cu(NO3) 2 with 50.0 mL of 0.50 M Co(NO3) 2. Sodium hydroxide is slowly added to the mixture. Which precipitates first? [Ksp(Cu(OH) 2) = 2.2 × 10-20, Ksp(Co(OH) 2) = 1.3 × 10-15]


A) Co(OH) 2
B) Co(NO3) 2
C) Cu(NO3) 2
D) Cu(OH) 2
E) No precipitate is formed.

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