What is the free Cu2+ concentration if 0.020 M Cu2+ solution is mixed with an equal volume of 4.0 M NH3? Kf for [Cu(NH3) 4]2+ is 1.1 × 1013.
A) 5.7 × 10-15
B) 2.8 × 10-16
C) 6.2 × 10-17
D) 4.5 × 10-15
E) 1.7 × 10-16
Correct Answer:
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