Solid AgCl is placed in pure water to form a saturated solution. A few crystals of NaNO3 are then added. What happens to the solubility of AgCl?
NaNO3 shares no ion with AgCl.
The common ion effect is responsible for:
Think about Le Chatelier's principle applied to a solubility equilibrium.
Which salt would have its solubility decreased most significantly by the addition of NaCl(aq)?
Look for a sparingly soluble salt that shares an ion with NaCl.
The solubility product, Ksp, of Mg(OH)2 is 1.0 x 10^-11 mol3 dm-9. What is the molar solubility of Mg(OH)2 in a 0.10 mol dm-3 NaOH solution?
The 0.10 M NaOH provides a common OH- ion; treat it as the dominant [OH-].
The common ion effect decreases:
It's a solubility phenomenon.
What is the effect of adding Na2SO4 to a saturated solution of BaSO4?
SO4(2-) is the common ion here.
