How can ethene be produced from ethanol

By dehydrohalogenation

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By dehydrogenation

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By dehydration with conc.sulphuric acid at

170^{\circ} C

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By reduction with hydrogen iodide

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Solution

The correct option is C By dehydration with conc.sulphuric acid at $170^{\circ} C$

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Q. Ethanol can be converted to ethene which can then be changed to ethane.
Choose the correct word or phrase from the brackets to complete the following sentences:
(i) The conversion of ethanol to ethene is an example of ........... (dehydration, dehydrogenation).
(ii) Converting ethanol to ethene requires the use of ......... (concentrated hydrochloric acid, concentrated nitric acid, concentrated sulphuric acid).
(iii) The conversion of ethene to ethane is an example of ......... (hydration, hydrogenation).
(iv) The catalyst used in the conversion of ethene to ethane is commonly ............ (iron, cobalt, nickel).

When ethanol is heated with concentrated sulphuric acid at $170^{\circ} C,$ it gets converted into ethene. In this reaction, concentrated sulphuric acid acts as :
(a) oxidising agent (b) catalyst (c) dehydrating agent (d) reducing agent

Ethanol undergoes dehydration to form ethene by heating it with:

Ethanol can be converted into ethene which can be changed into ethane. Choose the correct word or phrase from the brackets to complete the following sentences.

(a) The conversion of ethanol into ethene is an example of (dehydration, dehydrogenation).
(b) Converting ethanol into ethene requires the use of (conc. HCl, conc. $H N O_{3}, c o n c . H_{2} S O_{4})$ .
(c) The conversion of ethene into ethane is an example of (hydration, hydrogenation).
(d) The catalyst used in the conversion of ethene into ethane is commonly (iron, nickel, cobalt).

Q. Write the mechanism of acid dehydration of ethanol to yield ethene.

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How can ethene be produced from ethanol

The correct option is C By dehydration with conc.sulphuric acid at 170∘C

The correct option is C By dehydration with conc.sulphuric acid at $170^{\circ} C$