6.2.2 The common ion effect and salt effect Common lon Effect 1.The common ion effect The common ion effect is the reduction in the solubility of a sparingly soluble salt by the addition of a soluble salt that has an ion in common with it. 0 0.010.030.050.07 (NaF)(mol-L) CaF在NaF溶液中的同离子效应 ①①-⊙-⊙-⊙6.2.2 The common ion effect and salt effect 1.The common ion effect The common ion effect is the reduction in the solubility of a sparingly soluble salt by the addition of a soluble salt that has an ion in common with it