Question

The reagent used to convert Chloro ethane to ethene is (gr 11 wrong answer will be reported)
A.
Alc KOH

B.
Aq.KOH

C.
Na in dry ether

D.
Heating with Zn

Answer 1

Explanation:

ANSWER

Chloroethane reacts with alc. KOH and ethene forms.

It is a basic method for preparation of alkene.

Alcoholic KOH when used the elimination reaction takes place.

Option C is correct.

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Answer 2

Answer:

The given reaction is known as the elimination reaction. In a one- or two-step method, two substituents are removed from a molecule in an organic reaction known as an elimination reaction. The E2 reaction is the name given to the one-step mechanism and the E1 reaction to the two-step mechanism.

Explanation:

The reagent used to convert Chloro ethane to ethene is alcoholic KOH or alc KOH.

Alc KOH acts as a base that abstracts the adjacent proton from the carbon to which leaving group is attached.

Alc KOH abstracts the proton from the methyl group present adjacent to the carbon to which the chlorine group is attached.

The reaction is as follows below.

                 H₃C-CH₂-Cl + alc KOH → H₂C=CH₂ + H₂O + KCl

While the other reagents do not act as a base so they are incorrect for the given conversion.

Hence, the correct option is (A) alc KOH.

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