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1. why o-nitrophenol is more volatile than p-nitrophenol?
Since para has more symmetry than that of ortho or meta it fits into the crystal lattice better.
So it is less volatile! Also it has higher melting and boiling points, hence the stability!
In o-nitro phenol ,-OH is linked to -NO2 by means of intramolecular H-bonding.so,it is highly volatile.
Explanation:
Stronger intermolecular forces would make the substance less volatile.So we can see intermolecular H-bonding in P-nitro phenol ,so P-nitro phenol is less volatile,where as in o-nitro phenol intra H-bonding takes places thats why it is highly volatile.
pls approve :-)
o-nitrophenol is more steam volatile because it forms INTRA molecular hydrogen bonding whereas in p-nitrophenol there is INTER molecular hydrogen bonding which causes attraction between the molecules and hence the bond doesnot break easily.
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