What Is the Concentration of Free Zn²⁺(aq)if 0

question 5

Multiple Choice

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) ? K_f 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

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