In this chemistry lab we combined a multitude of chemicals in aqueous forms to see whether they would react or not. Through observations of these reactions we could determine solubility rules on what is and is not soluble. Limited to the chemicals used of course. These are my results:
1. sodium, potassium, and magnesium are always soluble.
2. Chlorine is always soluble except paired with lead(2), and silver.
3. NH4+ is always soluble.
4. PO4-3 and CO3-2 are insoluble except those that contain sodium, potassium, magnesium or NH4+
5. NO3- is always soluble.
6. OH- is insoluble except with sodium, potassium, magnesium, and NH4+
7. Sulfate is soluble except with silver and lead(2)
8. Silver , Lead(2), are generally insoluble except when with nitrate
9. Fe+3 is insoluble except with sulfate, chloride and and nitrate
When a reaction occurs there are multiple ways to write out the equation, which include molecular, ionic, and net ionic.
An example for a reaction between sodium hydroxide and Lead(2) nitrate
Molecular: 2NaOH(aq) + Pb(NO3)2(aq)—-> Pb(OH)2(s) + 2NaNO3(aq)
Ionic: Na+(aq) + OH-(aq) + Pb+2(aq) + NO3-(aq)—-> Pb(OH)2(s) + Na+(aq) + NO3-(aq)
Net ionic: OH-(aq) + Pb+2(aq)—-> Pb(OH)2(s)
That is how a reaction can be written out in three ways all being the same thing, magic.