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CBSE Class 12-science Answered

How will you get ethene from ethanol?
Asked by Topperlearning User | 26 Mar, 2014, 10:48: AM
answered-by-expert Expert Answer

Alcohols undergo dehydration in the presence of  protonic acids(conc. H2SO4 or H3PO4) to give either alkenes or ethers.

Example : When ethanol is heated with excess of conc. H2SO4 at 433-443K, ethene is obtained as the major product.

CH3CH2OH        CH2=CH2   + H2O

Answered by | 26 Mar, 2014, 12:48: PM
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