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6) Given the following thermodynamic data, calculate the equilibrium constant for the dissolution of galena, PbS, at 298 K and 1 bar according to the reaction PbS(solid) + H-Pb(aq) + HS. From this, can you calculate the solubility of PbS at pH-2? (Hint: assume [Pb2] [HS] and note that PbSl-1 for pure galena; at pH-2, [H+] 0.01) AHf, lbar (kJ/mol) 97.7 (kJ/mol-K) 0.091 (cm3/mole) 31.5 Galena (PbS, solid H+ (aqueous ion,1 molal Pb2+ (aq. ion, 1 molal HS-(aq. ion, 1 molal 1.70 0.01 17.0 0.063

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6) Given the following thermodynamic data, calculate the equilibrium constant for the dissolution of galena, PbS,...
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