Answer:
Ksp = 1.08 × 10⁻⁷
Explanation:
Given data:
Solubility of PbF₂ = 0.74 g/L
Ksp for PbF₂ = ?
Solution:
PbF₂ → Pb⁺² + 2F⁻
Number of moles dissolved = 0.74 g/L /245.2 g/mol
Number of moles dissolved = 0.003 M
[Pb⁺²] = 0.003 M
[F⁻] = 0.003 M × 2 = 0.006 M
Ksp = [Pb⁺²] [F⁻]²
Ksp = (0.003 ) (0.006 )²
Ksp = (0.003 ) (3.6 ×10⁻⁵)
Ksp = 1.08 × 10⁻⁷
