Question

Q. 7) How will you prepare propane from 1) Propene 2) Propyne
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Answer 1

  Explanation:

• Alkane can be converted into alkene in two steps. In the first step convert alkane into alkyl halide and then into alkene by reacting them with alcohols.

• Alken reacts with halides and NaNH₂ to give alkyne.
• Reaction:
• CH₃-CH₂-CH₃ + Br₂ (hν) → CH₃-CHBr-CH₃

• CH₃-CHBr-CH₃ + EtOH (Δ) → C₃H₆
• C₃H₆ + Br₂ + NaNH₂ → C₃H₄                                                                                                                                                                                                                                                                                                                                                                    

Answer 2

Explanation:

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