Question

Consider the dissolution of AB(s) : AB(s)⇌A+(aq)+B−(aq) Le Châtelier's principle tells us that an increase in either [A+] or [B−] will shift this equilibrium to the left, reducing the solubility of AB. In other words, AB is more soluble in pure water than in a solution that already contains A+ or B− ions. This is an example of the common-ion effect. Part B Calculate the molar solubility of lead thiocyanate in 0.900 M KSCN. Express your answer with the appropriate units.

Lead thiocyanate, Pb(SCN)2, has a Ksp value of 2.00×10−5.