Question

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Write the reaction for the preparation of

1) ALKANES

2) ALKENES

3) ALKYNES

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Answer 1

Answer:

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Explanation:

⭕️ALKENES

✅ Addition reactions involving alkenes and alkynes include hydrogenation, halogenation, and hydrohalogenation. Alkenes and alkynes are useful reagents in polymer synthesis—an important industrial application.

⭕️ALKANES

✅Alkanes undergo a substitution reaction with halogens in the presence of light. For instance, in ultraviolet light , methane reacts with halogen molecules such as chlorine and bromine. This reaction is a substitution reaction because one of the hydrogen atoms from the methane is replaced by a bromine atom.

⭕️ALKYNES

✅ Alkynes are oxidized by the same reagents that oxidize alkenes. Disubstituted alkynes react with potassium permanganate to yield vicinal diketones (Vic‐diketones or 1,2‐diketones) or, under more vigorous conditions, carboxylic acids. Ozonolysis of an alkyne also leads to carboxylic acid formation. Polymerization.

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Answer 2

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$\huge\underline\mathfrak\green{Answer}$

${\boxed{\bold{Alkanes}}}$

In wortz reaction a solution of alkyl halide in either on heating with sodium gives alkanes.

${\boxed{\bold{Alkenes}}}$

R-X or Alkyl Halides undergo heating with alcoholic potash to form alkenes. In this reaction, the heating of alkyl halides with alcoholic potash will remove one molecule from halogen acid leading to the formation of alkenes.

${\boxed{\bold{Alkynes}}}$

They can be prepared by adding sodium propanoate/ sodium ethanoate to lime water.

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