Question : Heating ethanol with excess concentrated sulphuric acid produces:
Option 1: ethane
Option 2: ethyne
Option 3: butane
Option 4: ethene
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Correct Answer: ethene
Solution : The correct answer is ethene .
Ethanol is dehydrated (water is removed) when heated with hot, concentrated sulphuric acid, producing ethene. The concentrated acid is recovered unaltered, serving only as a dehydrating agent. H 2 SO 4 is used as a dehydrator during the ethanol-to-ethane conversion process.
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