Ethanol is converted into ethoxyethane by:

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(A) The dehydration of ethanol to form ethoxyethane (diethyl ether) is an intermolecular dehydration reaction.When an excess of ethanol is heated with

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heating an excess of ethanol with conc. $H_2SO_4$ at $140^{\circ}C$ $(413\ K)$.

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(A) The dehydration of ethanol to form ethoxyethane (diethyl ether) is an intermolecular dehydration reaction.When an excess of ethanol is heated with concentrated $H_2SO_4$ at $413\ K$ $(140^{\circ}C)$,two molecules of ethanol undergo condensation to form ethoxyethane and water.The reaction is: $2CH_3CH_2OH \xrightarrow{conc. H_2SO_4, 413\ K} CH_3CH_2-O-CH_2CH_3 + H_2O$.Heating at $443\ K$ leads to intramolecular dehydration,forming ethene $(CH_2=CH_2)$.

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