Polar molecules | Non-polar molecules |
1.Molecules in which dipole moment is not ‘zero’ are called polar solvents. Example: NaCl, HF, H2O…etc They does not posses any symmetry. | 1.Molecules in which dipole moment is ‘zero’ are called non-polar solvents. Example: CCl4, H2, Cl2, O2…etc These compounds may posses symmetry. |
2.The non-zero dipole moment in these molecules is mainly due to electronegativity difference between bonding atoms. | 2.In non-polar molecules the dipole moment is zero due nearly equal in electronegativity of bonding atoms and also due to symmetry in structure. |
3.Generally polar molecules dissolve in polar solvents. Ex: NaCl will dissolve in H₂O | 3.Generally non polar molecules dissolve in non-polar solvents. Ex: CCl₄ will dissolve in Benzene |