Aromatic compounds burn with sooty flame because:
Correct answer: C. They have high percentage of carbon
- A. They have high percentage of hydrogen
- B. They have a ring structure
- C. They have high percentage of carbon
- D. They resist in reaction with air
Explanation
Aromatic compounds burn with a sooty flame because the benzene rings in their structure resist complete combustion, leading to the formation of elemental carbon (soot) instead of complete combustion to carbon dioxide. The correct answer is that they have a high percentage of carbon. The other options are incorrect because they do not directly relate to the sooty flame produced by aromatic compounds during combustion.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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