Which has more dipole moment o-nitrophenol or p-nitrophenol?

o-Nitrophenol will have lesser dipole moment than p-nitrophenol. This is because of resonance. During resonance, OH group will be electron donating group and will carry positive charge, where as nitro group is electron withdrawing group and carries negative charge.

Which phenol has highest dipole moment?

para nitro phenol has more dipole moment.

Which has high Vapour pressure ortho nitro phenol or para nitro phenol?

o-Nitrophenol exists as a monomer on account of intramolecular H-bonding while p-nitrophenol exists as associated substance on account of intermolecular H-bonding. Thus, o-nitrophenol is more volatile (higher vapor pressure) than p-nitrophenol.

Which is more acidic para nitro phenol or phenol?

The decrease in electron density of the O – H bond of p-nitrophenol, the polarity of O – H bond decreases. The electron withdrawing group (-NO ), withdraws electrons and disperses the negative charge. Hence p-nitrophenol is more acidic than phenol.

What is the dipole moment of phenol?

1.375591 D.
The net dipole moment of phenol is 1.375591 D.

Does nitrobenzene have a dipole moment?

Nitrobenzene has more dipole moment than nitro methane because in nitrobenzene there is greater charge separation due to the resonance. Therefore, it has less dipole moment.

Which has the highest dipole moment?

The larger the difference in electronegativities of bonded atoms, the larger the dipole moment. For example, NaCl has the highest dipole moment because it has an ionic bond (i.e. highest charge separation)….Introduction.

Why P-nitrophenol has higher boiling point?

p-Nitrophenol has intermolecular hydrogen bonding so it has more boiling point and less volatile than o-nitrophenol which has intramolecular hydrogen bonding.

Why the boiling point of O-nitrophenol is lower than that of P-nitrophenol?

P-nitrophenol shows intermolecular hydrogen bonding. So it has higher bonding point. Whereas o-nitrophenol shows intra molecular H-bonding hence lower boiling point.

Why para nitro phenol is stronger acid than phenol and para cresol?

This can be explained as: A. – CH3 group decreases the electron density on the oxygen of O-H group making p-cresol a weaker acid. – NO2 decreases the electron density on the oxygen of O-H group making p-nitrophenol a stronger acid.

Which has higher dipole moment phenol or methanol?

Higher the polarity of bonds in molecule, higher will be its dipole moment. In phenol carbon is sp2 hybridised and due to this reason benzene ring is producing electron withdrawing effect.