PbCl₂(aq) ⇌ Pb²+ (aq) + 2Cl⁻(aq), K₃ = 1.83 × 10⁻¹⁰, and AgCl(aq) ⇌ Ag⁺ (aq) + Cl⁻(aq), K4 = 1.19 × 10⁻⁴. What is the equilibrium constant Kfinal for the following reaction? PbCl₂(aq) + 2Ag⁺ (aq) ⇌ 2AgCl(aq) + Pb²+ (aq)
a) 1.72 × 10⁶
b) 1.04 × 10⁶
c) 1.27 × 10⁻⁶
d) 1.05 × 10⁻⁶