Question

How can you memorize chemistry solubility rules?

Answer 1

the maximum concentration of solute which cannot be further increased in a solution is called solubility of that solution and solubility rules are used to determine which product will be insoluble in water.

Complete step by step solution:
These given below steps can help you in memorizing solubility rules.
Most chromates, carbonate and phosphates are insoluble. Compounds like $CaC{O_3}$ , $$ $PbCr{O_4}$ , and $AgP{O_4}$ are all insoluble while compounds like $N{a_3}P{O_4}$ and $\left( {N{H_4}} \right)2C{O_3}$ are soluble.
salts containing nitrates, chlorates, and acetates are soluble examples $KN{O_3}$ , $NaCl{O_3}$ , and $C{H_3}COONa$ are all soluble.
most of hydroxide compounds are insoluble example $Fe{\left( {OH} \right)_3}$ , $Al\left( {OH} \right)3$ , and $Co{\left( {OH} \right)_2}$ are insoluble, but $Li{\left( {OH} \right)_2}$ and $NaOH$ are soluble.
salts containing Group 17 nonmetals are generally soluble, for example $AgCl$ and $HgC{l_2}$ are both insoluble.
most carbonates, chromates, and phosphates are insoluble example Compounds like $CaC{O_3}$ , $PbCr{O_4}$ , and $A{g_3}P{O_4}$ are all insoluble while compounds like $NaP{O_4}$ and $\left( {N{H_4}} \right)2C{O_3}$ are soluble.
most sulfate salts are soluble example For example: $N{a_2}S{O_4}$ is completely soluble, but $CaS{O_4}$ and $BaS{O_4}$ are not soluble.
Most sulfides are insoluble in water, for example $CdS$ , $FeS$ , and $ZnS$ are all insoluble.
The ammonium ion, $NH_4^ +$ , makes salt compounds that completely dissociate in the presence of water. For example $N{H_4}OH$ . is soluble even though it contains hydroxide.

Note:
every rule has some exceptions except in the cases of nitrates because all nitrates follow the solubility pattern of their nitrate family. Polar substances dissolve other polar substances, while nonpolar substances dissolve other nonpolar materials. The greater the difference in molecular structure (and hence in intermolecular attractions), the lower the mutual solubility.