AP BIOLOGY

Detailed explanation-1: -Polar molecules substances dissolve in polar solvents . Similarly, non-polar substances dissolve in nonpolar solvents. This is because of the difference in the interparticle forces of attraction that exist among polar and non-polar substances.

Detailed explanation-2: -Polar substances are likely to dissolve in polar solvents. For example, ionic compounds, which are very polar, are often soluble in the polar solvent water. Nonpolar substances are likely to dissolve in nonpolar solvents.

Detailed explanation-3: -Like Dissolves Like. A simple way to predict which compounds will dissolve in other compounds is the phrase “like dissolves like". What this means is that polar compounds dissolve polar compounds, nonpolar compounds dissolve nonpolar compounds, but polar and nonpolar do not dissolve in each other.

Detailed explanation-4: -Non-polar substances dissolve in each other as the solvent particles can easily collide with solute particles. There is an attraction between the solute and the solvent molecule which helps in holding these particles together.

Detailed explanation-5: -If the polarities do not match, i.e., one is polar and other is non-polar, the solute will not dissolve. Note: Non-polar solvents do not form the hydrogen bonding with the solvent. But they dissolve the solute by weak van der Waals force among the solute and solvent.