Final answer:
The Ksp expression for calcium fluoride (CaF2) is Ksp = [Ca²+][F¯]².
Step-by-step explanation:
The solubility product constant (Ksp) expression for calcium fluoride (CaF2) is calculated based on its dissociation equation. The dissociation equation for CaF2 is CaF2(s) → Ca²+(aq) + 2F¯(aq). The Ksp expression is given by Ksp = [Ca²+][F¯]², where [Ca²+] represents the concentration of calcium ions and [F¯] represents the concentration of fluoride ions.