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Chemistry Tables
Chapter 4
| Term | Definition |
|---|---|
| elements | oxidation # is zero |
| monatomic ions | oxidation # equals charge on the ion |
| oxygen | oxidation # is -2 on most compounds except peroxides |
| hydrogen | oxidation # is +1 in most compounds, (-1 in metal binary compounds ex CaH2) |
| halogens | oxidation # is -1 in F. Cl, Br, and I is -1 in binary compounds except when the other element is another halogen above it or oxygen |
| Compounds and ions | oxidation # is the sum of numbers in compound=0 sum of numbers in polyatomic ions = charge on ion |
| CO3 2- evolves to | CO2 + H2O |
| SO3 2- evolves to | SO2 + H2O |
| S 2- evolves to | H2S +H2O |
| Group 1A and NH4+ compounds | soluble |
| C2H3O2- and NO3- | soluble |
| Cl- Br- I- | soluble except Ag, Hg, Pb bonded |
| SO4 2- | soluble except Ca, Sr, Ba, Ag, Hg, Pb |
| CO3 2- | insoluble except group 1A and NH4+ |
| PO4 3- | insoluble except group 1A and NH4+ |
| S 2- | insoluble except group 1A and NH4 + |
| OH- | insoluble except group 1A, Ca, Ba, Sr |