When excess ethanol is heated to 145 oC in the presence of concentrated sulphuric acid, the product is
diethyl ether
ethyne
diethyl sulphate
acetone
ethanoic acid
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When ethanol is heated to 145°C in the presence of concentrated sulphuric acid, the primary product is:
A) Diethyl ether
However, at higher temperatures (above 160°C), ethanol can also produce:
- Ethylene (C2H4)
- Diethyl sulphate
But at 145°C, diethyl ether is the primary product.

when excess ethanol react with conc sulphuric acid at 170oC it gives ethene and water not diethylether

Ethanol can be dehydrated to give ethene by heating it with an excess of concentrated sulphuric acid at 170
0C. The acid catalysts normally used in alcohol dehydration is concentrated sulphuric acid which results in alkene.
C2H5OH+conc.H2SO4→C2H4+H2O...and it's because H2SO4 is use as dehydration in the reaction hmmmmm🤔😄sense...Oh grant me your knowledge to understand chemistry,🙇

