Calcium fluoride, CaF2, has a molar solubility of 2.1 × 10–4 mol L–1 at pH = 7.00. By what factor do — Aqueous Chemistry Chemistry Question

Calcium fluoride, CaF₂, has a molar solubility of 2.1 × 10–4 mol L–1 at pH = 7.00. By what factor does its molar solubility increase in a solution with pH = 3.00? The pKa of HF is 3.17.