Sanjivani posted an Question
July 06, 2020 • 12:08 pm 30 points
  • IIT JAM
  • Chemistry (CY)

What is the answer?

2 Answer(s) Answer Now
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  • Suman Kumar best-answer

    See this

    cropped2225576948735365952.jpg
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    I am asking about option c....butyne-2

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    Since only terminal alkyne reacts with AgNO3. But-2-yne is not a terminal alkyne.

  • Suman Kumar best-answer

    Baeyer's reagent is alkaline KMnO4​, it reacts with unsaturated hydrocarbon (alkene, alkyne, etc.) and decolourises its pink colour. And silver nitrate reacts with acidic hydrogen of alkyne and makes white precipitate. Among the given options, methane and ethane are alkanes, so they don't react with either solution.  Ethylene is unsaturated but doesn't have acidic hydrogen, so it react with Baeyer's reagent but does not react with silver nitrate. Alkyne reacts with both reagents

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    in book answer butyne-2 is also given...why does it not react with silver nitrate?

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    Ok let me check

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