Hydroxylapatite, cao(PO4)6(OH)2, has a solubility constant of Ksp = 2.34 x 1059, and dissociates according to Ca10(PO4)6(OH,(s) ê·¼ 10Ca2+ (aq) +6P0:-(aq) +20H-(aq) 2+ this solution if (OH ] is somehow fixed at 6.80 x 106 M? Number [Ca2+] = IM Tools 102