General Science • ChemistryMedium
What is the primary product formed when ethanol is heated with excess concentrated sulfuric acid at 443 K?
A. Diethyl ether
B. Ethene✓ Correct Answer
C. Ethanoic acid
D. Ethyl hydrogen sulfate
💡 Solution & Explanation
Concentrated sulfuric acid acts as a powerful dehydrating agent that removes a water molecule from ethanol at 443 K to produce ethene gas. Lower temperatures around 413 K with excess ethanol would yield diethyl ether instead of the alkene product. This dehydration reaction serves as a standard laboratory preparation method for unsaturated hydrocarbons in organic chemistry syllabi.
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