Which solution contains the largest number of moles of chloride ions? A) 25.00 mL of 0.400M KCI
B) 10.0 mL of 0.500M BaCl2
C) 30.00 mL of 0.100M CaCl2
D) 4.00 mL of 1.000M NaCl
E) 7.50 mL of 0.500M FeCl3

Is a logical series of steps

Answerthis solution will not form a precipitateexplanationsolubility equilbrium:         pbf₂(s)  ⇄ pb²⁺(aq) + 2 f⁻(aq)the solubility product expression is    (we exclude solids from the equilibrium expression).now suppose we have the trial ion product q, which we can define as    then, we can interpret  q as the product of the concentration of the ions that we have and ksp as the product of the ion concentrations that are needed to form a saturated solution.if q > ksp, then that implies that there will be a surplus of ions that exceed the amount that is required to form a saturated solution. a precipitate will then form (the precipitate continually  forms until the surplus ions are removed and q is decreased to ksp's value).if q = ksp, the saturated solution that forms is barely saturated and the precipitate will be minimal.if q < ksp, then the ion concentration will not be enough to form a saturated solution (so no precipitate).using our information, we calculate the trial ion product:     since q = 2.7  × 10⁻⁸ < ksp =  4  ×  10⁻⁸, a precipitate will not form.

A. is your answer.  hope this  

Idon't mean to be a smart alec, length of atoms' bonds is the simplest way to define it.