Suppose Sodium Hydroxide Is Added to a 0

question 38

Multiple Choice

Suppose sodium hydroxide is added to a 0.0042 M solution of zinc nitrate such that the pH of the solution is 13.04.What is the equilibrium concentration of Zn²⁺?
Zn²⁺(aq) + 4OH^-(aq) Zn(OH) ₄^2-(aq) ; K_f = 2.8 × 10¹⁵

• A)1.6 × 10^-17 M
• B)4.2 × 10^-3 M
• C)2.7 × 10^-2 M
• D)1.0 × 10^-14 M
• E)1.4 × 10^-17 M

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