SrF₂(s) ⇄ Sr²⁺(aq) + 2F⁻(aq) Ksp = 2.0 x 10⁻¹⁰
25.0 mL of 0.160 M Sr(NO₃)₂ is mixed with 75.0 mL of 0.013 M NaF. A precipitate of SrF₂ forms. What is [F⁻] at equilibrium?