6 NaOH + 9 C → 3 Na₂O + C₆H₆ + 3 COI learned of this synthesis from an old book, possibly published in the 1800s.
Coal and Lye – What Conditions?Such a reaction strongly suggests isolation. The reaction required considerable heat. Also, air was to be excluded, since carbon would react preferentially with the oxygen in it.
C + O₂ → CO₂Plus, any benzene that would tend to form would also react with gaseous oxygen according to the reaction,
C₆H₆ + 6 O₂ → 6 CO₂ + 3 H₂OCan anyone of our readers verify this is a valid method for the synthesis of benzene? And if it is valid, can he or she hazard a guess at the mechanism involved?
Reminiscent of AcetyleneIt will be recalled that acetylene gas, used in an oxy-acetylene welding, has the chemical formula H–C≡C–H. It, too, can be made in a most interesting way—by the hydration of calcium carbide. First, calcium carbide is made in an electric furnace from lime (calcium oxide, CaO) and coke (C).
CaO + 3 C → CaC₂ + CO
CaC₂ + 2 H₂O → H–C≡C–H + Ca(OH)₂
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