(3)盐的水溶性：重铬酸盐>铬酸盐 K9(AgCr04)=1.1X1012K(Ag,C,0)=2.0X10 4Ag+CrO号+H2O→2Ag2CrO4(s,砖红)+2H 2Ba2+Cr,O号+H,0一→2 BaCrO4(s,柠檬黄)+2H 2Pb2++Cr,02+H20一2 PbCrO4(s,黄)+2H K2Cr2O PbCrO4 - (Ag Cr O )=2.0×10 7 Ksp 2 2 7 - (Ag CrO )=1.1×10 12 Ksp 2 4 + - + 4Ag +Cr O + H2O 2Ag2CrO4 (s, ) + 2H 2 2 7 砖红 + - + 2Ba +Cr O + H2O 2BaCrO4 (s, )+2H 2 2 7 2 柠檬黄 + - + 2Pb +Cr O + H2O 2PbCrO4 (s, ) + 2H 2 2 7 2 黄 K2Cr2O7 PbCrO4 (3)盐的水溶性：重铬酸盐> 铬酸盐