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What coumpunds are always soluble
Group 1 metal ions (Na+, K+, Li+ …)
NH4+ , NO3 - , C2H3O2- , HCO3 - , ClO3- , ClO4-
Always soluble coumpounds
Are halide ions (Cl- , Br- , I- ) soluble
Yes; except when combined with Ag+, Hg2 2+, or Pb 2+
Is SO42- soluble
Yes; except when combined with Ag+, Ca2+, Sr2+, Ba2+, Hg2 2+, or Pb 2+
When are CO32- and PO43- insoluble
When combined with Alkali metal ions or NH4+
When is CrO42- insoluble
When combined with Alkali metal ions or NH4+, Ca2+, or Mg2+
When are OH- and S2- insoluble
When combined with Alkali metal ions or NH4+, Ca2+ , Sr2+, or Ba2+