Who Does Polarity Affect Solubility?

Polar species are soluble in water, while nonpolar species are soluble in oils and fats. Covalent solubility uses the like dissolves like rule. This means that substances with the same type of polarity will be soluble in one another. Moreover, compounds with differing polarities will be insoluble in one another.

Why is polarity important in solubility?

​For a solute to dissolve the attraction to the solvent molecules must be stronger than the bonds holding the atoms/molecules of the solute together. Polar substances dissolve polar substances. e.g. Water, being polar attracts the molecules of other polar substances (e.g. HCl) and will dissolve them.

Does higher polarity mean higher solubility?

Thus, polarity affects solubility. If solute and solvent have approximately the same polarity, they will probably form a solution. “Like dissolves like”: Polar solutes dissolve in polar solvents; nonpolar solutes dissolve in nonpolar solvents.