Since then the phrase used to refer to this kind of Latin has usually been Vulgar Latin.. This was an unfortunate choice, given the pejorative ring that the word Vulgar has in the ears of the layperson, but it had respectable precedents, for the phrase vulgaris sermo had been used by Cicero.
Benzene is a widely used industrial chemical. Benzene is found in crude oil and is a major part of gasoline. Its used to make plastics, resins, synthetic fibers, rubber lubricants, dyes, detergents, drugs and pesticides. Benzene is produced naturally by volcanoes and forest fires. In homes, benzene may be found in glues, adhesives, cleaning products, paint strippers, tobacco smoke and gasoline.
Benzene is the simplest aromatic compound with C6H6 molecular formula and contains three pi bonds arranged in alternate manner in hexagonal ring. The carbon-carbon bond length in benzene is intermediate to C-C single bond (154 pm) and C = C double bond (134 pm) that is 139 pm due to resonance in molecule.ince six pi electrons are delocalized over whole ring, therefore the cyclically conjugated double bonds represents by a circle and the carbon-carbon bond length becomes equal. This structure of benzene is called as resonance hybrid of benzene and generally used to represents the benzenemolecule.