Elementary lead does not dissolve in water. However, lead carbonate is soluble in water:                         PbCO3(s)  ⇆  Pb2+(aq) + CO32−(aq)           Kc = 0.53 If excess lead carbonate is added to a beaker of pure water, what is the equilibrium concentration of Pb2+ (in moles/L) in solution?

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