Appendix

Appendices1093Pb 3 (PO 4 ) 2 (T = 38 o C) 43.55 3.0×10 –44Sulfate (SO 2– 4 ) pK sp K spCaSO 4 4.62 2.4×10 –5SrSO 4 6.50 3.2×10 –7BaSO 4 9.96 1.1×10 –10Ag 2 SO 4 4.83 1.5×10 –5Hg 2 SO 4 6.13 7.4×10 –7PbSO 4 7.79 1.6×10 –8Sulfide (S 2– ) pK sp K spMnS (green) 13.5 3.×10 –14FeS 18.1 8.×10 –19CoS (b) 25.6 3.×10 –26NiS (g) 26.6 3.×10 –27CuS 36.1 8.×10 –37Cu 2 S 48.5 3.×10 –49Ag 2 S 50.1 8.×10 –51ZnS (a) 24.7 2.×10 –25CdS 27.0 1.×10 –27Hg 2 S (red) 53.3 5.×10 –54PbS 27.5 3.×10 –28Thiocyanate (SCN – ) pK sp K spCuSCN (m = 5.0 M) 13.40 4.0×10 –14AgSCN 11.97 1.1×10 –12Hg 2 (SCN) 2 19.52 3.0×10 –20Hg(SCN) 2 (m = 1.0 M) 19.56 2.8×10 –20