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Why do aromatic compounds give off a smoky flame?

Answer 1

Why do aromatics give off a sooty flame? Incomplete combustion!

Benzene is one example that we can use.

Its full combustion is

#C_6H_6 + 15/2O_2 rarr 6CO_2 + 3H_2O#

Nevertheless, because the molecule is stable and carbon dense, it might combust incompletely to give #CO# and #C#, i.e. soot.

#C_6H_6(l) + 6O_2(g) rarr 4CO_2(g) +CO(g) +C(s) + 3H_2O(g)#

How do I know that only 1 equiv of #CO# and #C# were produced? Of course, I don't know that. I do know that my equation should be balanced.

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Answer 2

Nolan Allen

Aromatic compounds give off a smoky flame due to their high carbon content and incomplete combustion, leading to the release of soot particles. These particles are responsible for the visible smoke and characteristic odor associated with burning aromatic compounds.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.