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Dehydrohalogenation for Alkenes

How is ethene...

Question

How is ethene prepared by :
(a) dehydrohalogenation reaction?
(b) dehydration reaction?
Give equations and name the products formed.

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Solution

(a) Dehydrohalogenation reaction:

$C_{2} H_{5} C l K O H (alc. and hot) - ---------- \to C_{2} H_{4} E t h e n e + K C l + H_{2} O$

(b) Dehydration reaction:

$C_{2} H_{5} O H A l_{2} O_{3} - --- \to 3000^{o} C C_{2} H_{4} E t h e n e + H_{2} O$

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