Overall, the solubility of the reaction decreases with the added sodium chloride. This therefore shift the reaction left towards equilibrium, causing precipitation and lowering the current solubility of the reaction. The reaction quotient for PbCl 2 is greater than the equilibrium constant because of the added Cl. To simplify the reaction, it can be assumed that is approximately 0.1M since the formation of the chloride ion from the dissociation of lead chloride is so small. The equilibrium constant remains the same because of the increased concentration of the chloride ion. Notice that the molarity of Pb 2 + is lower when NaCl is added. Beaker 1 Beaker 2 Beaker 3 Beaker 4 Water 0.100 M 0.100 M 0.200 M NaCl Na SO Ba (NO3)2 mmon Ion Effect on Solubility 13 W US22762ULUTUMI/O2UIUNULULITUUUULUUMUULUUUUUUU MICHIELO WHICH precip ocas depende UIT TE SOUL PROCLC COTISAT IE precipitate.
Consider the lead(II) ion concentration in this saturated solution of PbCl 2. The solubility product constant for barium sulfate is Kp 1.1 x 10'.
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