What is the concentration of free Zn2+(aq) if 0.020 M Zn2+ solution is mixed with an equal volume of 2.0 M NH3(aq) ? Kf for [Zn(NH3) 4]2+ is 4.1 × 108.
A) 2.5 × 10-11 M
B) 2.9 × 10-11 M
C) 1.7 × 10-10 M
D) 9.6 × 10-11 M
E) 2.4 × 10-9 M
Correct Answer:
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