Water's polarity help it to dissolve so many substances as water's oppositely charged ends are attracted to other charged ions and polar molecules.
water's polarity allows it to form covalent bonds with many substances because of water bent shape. it gives oxygen atom partial negative charge and hydrogen atom partial negative charge .the positive part attract and pull of negative part solute and the negative part attract and pull of positive part of solute.
Hydrocarbons are non polar molecule , they do not dissolve in polar solvent like water. so, water's polarity does not increases its ability to form ionic bond with ions and hydrocarbons.
Hydrophobic means water - fearing . this means the hydrophobic substances donot dissolve in water.
Thus, Water's polarity help it to dissolve so many substances as water's oppositely charged ends are attracted to other charged ions and polar molecules. hydrocarbons and hydrophobic substance do not dissolved in water.
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