Question: Solubility products predict that cation A 3+ can be 99.999% separated from cation B 2+ by precipitation with anion X - . When the separation

Solubility products predict that cation A³⁺ can be 99.999% separated from cation B²⁺ by precipitation with anion X^-. When the separation is tried, we find 0.2% contamination of AX₃(s) with B²⁺. Explain what might be happening.

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