Calculate the Equilibrium Concentration of Zn²⁺(aq) in a Solution That $\leftrightarrow$

question 66

Multiple Choice

Calculate the equilibrium concentration of Zn²⁺(aq) in a solution that is 0.0125 M Zn(NO₃) ₂ and 0.600 M NH₃.
Given: Zn²⁺(aq) + 4 NH₃(aq) $\leftrightarrow$ Zn(NH₃) ₄²⁺(aq) K_f = 2.9 * 10⁹.

• A) 7.8 *10 10^-12 M
• B) 4.7 *10 10^-11 M
• C) 1.5 *10^-8 M
• D) 2.5 * 10^-9 M
• E) 2.9 * 10⁹ M

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