Multiple Choice
What ratio of [NH4+]/[NH3] would provide a buffer of pH low enough to avoid precipitation of Co(OH) 2(s) from a 0.50 M Co2+(aq) solution? (Kb for NH3 = 1.8 × 10-5 and Ksp for Co(OH) 2= 2.0 × 10-14
A) 1/50
B) 1/90
C) 1/1
D) 90/1
E) 50/1
Correct Answer:
Verified
Correct Answer:
Verified
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