What are different interaction forces which aid in GC separation? What is the major advantage of GC over distillation?
hree polar interactions important in gas chromatography. (A) Hydrogen bonding requires both a hydrogen donor (acidic proton, H; green dots) and a hydrogen acceptor sites (basic, electron rich, N, O; red dots). The blue cloud is shaded to illustrate electron density (darker = electron rich, lighter = electron poor). (B) Dipole-dipole interactions occur between molecules that have a permanent dipole due to electronegative atom in the molecule (yellow dot). (C) Dipole-induced dipole happens when a dipole distorts the electron cloud of a polarizable molecule such as an aromatic, causing a momentary dipole.
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