Give some examples of polar and non polar its characteristics??
1,2 dichloro benzene or ortho di chloro benzene is non polar in nature while its isomer para dichloro benzene is polar (due to zero dipole moment).
Polar molecules occur when two atoms do not share electrons equally in a covalent bond.A dipole forms, with part of the molecule carrying a slight positive charge and the other part carrying a slight negative charge. This happens when there is a difference between the electronegativity of each atom.
example of Polar molecules: water, ammonia,sulphur dioxide,ethanol etc.
When molecules share electrons equally in a covalent bond there is no net electrical charge across the molecule.
In a nonpolar covalent bond, the electrons are evenly distributed. You can predict nonpolar molecules will form when atoms have the same or similar electronegativity.
examples: CO2, CH4,Benzene, CCl4 etc
1,2- and 1,3-Dichlorobenzenes are polar molecules while 1,4-dichlorobenzene is not since 1,4-isomer is symmetric. The polarity (measured by dipole moment) of either 1,2- and 1,3-isomers of dichlorobenzene is not high compared to water, ammonia or DMSO, but they are certainly polar molecules.
It's a classic physical chemistry lab experiment. 1,2 dichlorobenzene is polar. Online values of the dipole moment exceed 2 Debye. Just google. 1,3 is also polar, but 1,4 is not, because of the vector cancellation of the C-Cl bond dipoles.
The o-dichlorobenzene is polar and has a dipole moment is 2.5 B, but it is poorly miscible in water.
- Badges
- Science topic
- Similar topics
- Chemistry
- Organic Chemistry