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[求助] 比较铬酸盐/重铬酸盐溶解度

下列各组物质溶解度相对大小正确的是
A.Ag2Cr2O7<Ag2CrO4
B.BaCrO4>BaCr2O7
C.CaCrO4<BaCrO4
D.PbCrO4<PbCr2O4

答案是不是选D呀,C中同类铬酸盐溶解度如何比较?

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