Seethalakshmi Sambasivam posted an Question
December 20, 2020 • 12:28 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Why does tollens reagent reacts only with terminal alkynes ??

why does tollens reagent reacts only with terminal alkynes ??

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  • Suman Kumar best-answer

    Terminal alkyne have hydrogen which is acidic. But in case of non terminal alkyne it doesn't have acidic proton. Tollens reagent reacts with this acidic proton

  • Seethalakshmi sambasivam

    but why can't it react with non terminal alkynes

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    There is significant difference in terminal and non terminal alkynes. Unlike terminal alkynes, no hydrogen is present in non terminal alkynes so it doesnt react.

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    thank u

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    if there is more terminal alkynes in one hydrocarbon chain will it react

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    Priyanshu kumar Best Answer

    With terminal alkynes, the alkyne reacts as a acid to form a silver acetylide which precipitates. In the case of acetylene, both hydrogens can react.

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    Tollen's reagent is also used to test for the terminal alkynes.

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