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Ethene is formed when ethanol at 443 K i...

Ethene is formed when ethanol at 443 K is heated with excess of concentrated sulphuric acid. What is the role of acid in the this reaction ? Write the balanced chemical equation of this reaction.

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Sulphuric acid acts as a dehydrating agent.
`CH_(3)CH_(2)OH underset(443K) overset("Hot conc. "H_(2)SO_(4))to CH_(2)=CH_(2)+H_(2)O`
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