What Is the Concentration of [PO₄^3-] in a Saturated Solution

question 78

Multiple Choice

What is the concentration of [PO₄^3-] in a saturated solution of Ca₃(PO₄) ₂? The K_sp of Ca₃(PO₄) ₂ is 2.1 × 10⁻³³.

• A) 3.28 × 10⁻⁶ M
• B) 1.64 × 10⁻⁶ M
• C) 2.82 × 10⁻⁷ M
• D) 2.28 × 10⁻⁷ M
• E) 8.22 × 10⁻⁷ M

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