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Benzene produces more soot than ethene on burning because benzene

Chemistry
WAEC 2001

Benzene produces more soot than ethene on burning because benzene

  • A. has a higher molar mass
  • B. has a higher degree of unsaturation
  • C. undergoes substitution and addition reactions
  • D. is a liquid at room temperature
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Correct Answer: Option A
Explanation

Benzene has a higher carbon content than other saturated hydrocarbons, like ethene. This invariably means it has a higher molar mass. When benzene burns, it forms elementary carbon, which causes it to burn with a sooty flame. Benzene is a member of the aromatic hydrocarbon family, which are nonpolar molecules that are usually colourless liquids or solids.


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