Chem/phys question not sure what this is

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The discussion centers on the equilibrium dynamics of lead chloride (PbCl2) in a saturated solution when a small amount of Pb-212, as a Pb2+ ion, is introduced. The equilibrium reaction is represented as PbCl2(s) + H2O(l) <----> Pb2+(aq) + 2 Cl-(aq). The presence of Pb-212 in the solid PbCl2 indicates that the equilibrium is dynamic, allowing for the exchange of isotopes within the solution and solid phases. The participants clarify that the correct oxidation state of lead in this context is Pb2+, not Pb3+.

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quantumlight
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ok this is in my Nuclear chemistry section (go figure)

a small amount of Pb-212, in the form of 3+ ion, is injected into a saturated solution of PbCl2 that is in contact with the solid salt. A short time later some of the Pb-212 is found in solid PbCl2 in the saturated solution. What does this information tell you about the nature of the equilibrium between solid PbCl2 and its dissolved ions?

i would assume the solvent is water
PbCl2(s) + H2O(l) <----> Pb2+(aq) + 2 Cl-(aq)

so since some PbCl2 would dissociate while others use the seed salt to crystallize the dissociated normal Pb 2+ would be replaced by the isotop Pb 212 so i guess the equilibrium illustrates the natural composition ratio of different lead isotopes

im just guessing here since knowing that the chapter is nuclear chemistry and the amu average of different elements couldn't possibly be obtained by finding all of the isotopes in the universe
 
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You sure the question states Pb3+? Or is it a typo?

Is chemical equilibrium static or dynamic?


Borek
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oops yeah its 2+ uhmmm its dynamic