• # question_answer Which of the following reaction conditions are used for the conversion of ethanol to ethylene? A)  Conc.${{H}_{2}}S{{O}_{4}}/170{{\,}^{o}}C$B)  Dil.${{H}_{2}}S{{O}_{4}}/100{{\,}^{o}}C$C)  Dil.${{H}_{2}}S{{O}_{4}}/140{{\,}^{o}}C$D)  Conc.${{H}_{2}}S{{O}_{4}}/70{{\,}^{o}}C$

Dehydration of alcohol at $160{}^\circ -170{}^\circ C$. $C{{H}_{3}}-C{{H}_{2}}-OH+conc.{{H}_{2}}S{{O}_{4}}\xrightarrow{{{160}^{o}}-{{170}^{o}}}$ $C{{H}_{2}}=C{{H}_{2}}+{{H}_{2}}O$ Hence, the correct option is (a).