Consider the equilibrium of PbCl2(s) in water. PbCl2(s) ? Pb2+(aq) + 2Cl?(aq) , What is the effect of adding NaCl(aq) to the equilibrium solution?
A) The sodium ion reduces the Pb2+ to Pb(s) .
B) PbCl2 solubility increases due to the common-ion effect.
C) PbNa2(s) precipitates.
D) The NaCl(aq) has no effect on the system.
E) PbCl2(s) precipitates until equilibrium is reestablished.
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