Silver phosphate is less soluble in Na₃PO₄ than in water because A) a common ion displaces the solubility equilibrium towards the undissolved solute. B) some insoluble compounds are amphoteric. C) the solubility of most salts increases as temperature increases. D) the formation of complex ions displaces the solubility equilibrium to the right. E) the solubility of many salts is affected by the pH of the solution.

Question

Quizplus · Accepted Answer

Na₃PO₄ contains the common ion sulfide (S2-) which reduces the solubility of silver phosphate by shifting the equilibrium towards the undissolved solid. This is due to the common ion effect, where the presence of an ion in a solution reduces the solubility of a compound containing that same ion.

Silver Phosphate Is Less Soluble in Na3PO4 Than in Water

Silver Phosphate Is Less Soluble in Na₃PO₄ Than in Water