What is the Ksp expression for Ca₃(PO₄)₂?
Correct answer: C. [Ca²⁺]³[PO₄ ³⁻]²
- A. [Ca²⁺][PO₄ ³⁻]
- B. [Ca²⁺]²[PO₄ ³⁻]³
- C. [Ca²⁺]³[PO₄ ³⁻]²
- D. [Ca²⁺][PO₄ ³⁻]²
Explanation
Ca₃(PO₄)₂ ⇌ 3Ca²⁺ + 2PO₄³⁻, Ksp = [Ca²⁺]³[PO₄³⁻]².
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Reversible reactions reach dynamic equilibrium when forward and reverse rates become equal, and Le Chatelier's principle predicts the effect of changing concentration, pressure or temperature. The chapter also covers solubility product, the common ion effect, buffer action and the conditions used in Haber's process, with equilibrium shifts distinguished from changes in the equilibrium constant.
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