Non-polar compounds dissolve in non-polar solvents while polar compounds dissolve in polar solvents, such as NaCl in water. Polar compounds are generally soluble in water, especially if they can form hydrogen bonds, like methanol. Inorganic bases like NaOH are soluble due to their ionic nature, while organic bases are soluble in the presence of organic acids due to interactions that form complexes.

1. First remember that non polar compounds are soluble in non polar solvents (like
benzene in acetone) and polar compounds are soluble in polar solvents (like NaCl in H2O) Now
if you consider solubility in water, all polar compounds are soluble and the structure which can
make hydrogen bonding with water is also soluble like methanol which can form hydrogen
bonding with water.. First look at the structure to identify what kind of bonds are existing, if you
see any ionic bond it will be soluble in water. inorganic base is something like NaOH which has
the basic unit OH- which can easily take a proton from an organic acid and from a bond and
hence it will be soluble. organic base is soluble when organic acid is present because acid and
base has the larger tendency to get interacted and form a complex.
Solution
First remember that non polar compounds are soluble in non polar solvents (like
benzene in acetone) and polar compounds are soluble in polar solvents (like NaCl in H2O) Now
if you consider solubility in water, all polar compounds are soluble and the structure which can
make hydrogen bonding with water is also soluble like methanol which can form hydrogen
bonding with water.. First look at the structure to identify what kind of bonds are existing, if you
see any ionic bond it will be soluble in water. inorganic base is something like NaOH which has
the basic unit OH- which can easily take a proton from an organic acid and from a bond and
hence it will be soluble. organic base is soluble when organic acid is present because acid and
base has the larger tendency to get interacted and form a complex.