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Qualitative analysis
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Rules to Determine Solubility and Insolubility
1CationsH+Soluble
Li+
Na+
K+
Rb+
Cs+
NH4+
2AnionsNO3-Soluble
CH3COO-
HCO3-
ClO4-
3Cl-(a)Ag2+ Hg2+ Pb2+Insoluble
Br-
(b)Soluble
I-
4SO42-
(a)Ag2+ Hg2+ Pb2+ Ca2+ Sr2+ Ba2+Insoluble
(b)Soluble
5OH-
Insoluble
6CrO42-Insoluble
PO43-
C2O42-
CO32-