If the concentration of phosphate ions ([PO43–]) in a saturated solution of Ca3(PO4)2 is known, which expression should be used to calculate the solubility product constant (Ksp) for Ca3(PO4)2? A. Ksp = 9 [PO43–]5 / 4 B. Ksp = 27 [PO43–]5 / 8 C. Ksp = 3 [PO43–]5 / 2 D. Ksp = 4 [PO43–]5 / 9 E. Ksp = 8 [PO43–]5 / 27

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