Q

What product will be formed when ethanol at 443K with excess concentrated sulphuric acid is heated?

RRB Technician Grade III, 29-Dec-24 S-2 2024
✓ Answer: C Ethene and water
Ethene and water are the products formed when ethanol is heated at 443K with excess concentrated sulphuric acid. This reaction is a dehydration reaction, where a water molecule is removed from the ethanol molecule to create an unsaturated hydrocarbon. In this process, concentrated sulphuric acid acts as a powerful dehydrating agent and a catalyst to facilitate the removal of a hydroxyl group and a hydrogen atom. The chemical equation for this transformation is: CH3CH2OH --conc.H2SO4, 443K--> CH2=CH2 + H2O.
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