In the commercial extraction of aromatic hydrocarbons from coal tar, which specific fraction yields — Aromatic Hydrocarbons Chemistry Question
Question
In the commercial extraction of aromatic hydrocarbons from coal tar, which specific fraction yields benzene and toluene upon fractional distillation?
Answer: A
💡 Solution & Explanation
During the fractional distillation of coal tar, the 'light oil' fraction, which distills between $80^\circ C$ and $170^\circ C$, is rich in lower molecular weight aromatics. It yields mostly benzene ($60-65\%$), toluene, and xylenes. Middle oil primarily gives naphthalene and phenols.
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