Consider the Following Equilibria $\rightleftharpoons$ Pb²⁺(aq) + 2 Br^-(aq)
K₁ = 6

question 11

Multiple Choice

Consider the following equilibria.
PbBr₂(s) $\rightleftharpoons$ Pb²⁺(aq) + 2 Br^-(aq)
K₁ = 6.6 × 10^-6
Pb(OH) ₂(s) $\rightleftharpoons$ Pb²⁺(aq) + 2 OH^-(aq)
K₂ = 1.4 × 10^-15
Determine the equilibrium constant, K_c, for the reaction below.
PbBr₂(s) + 2 OH^-(aq) $\rightleftharpoons$ Pb(OH) ₂(s) + 2 Br^-(aq)

• A) 9.2 × 10^-21
• B) 2.1 × 10^-10
• C) 6.6 × 10^-6
• D) 4.7 × 10⁹
• E) 1.1 × 10²⁰

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