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    (Original post by Qer)
    ohh that's fine


    Can you explain to me why HCN cant undergo reaction?
    The "why" would have to be conjecture. I know that HCN does not react with alkenyl groups.

    The first step in the mechanism is pi electrons moving to the partially positive atom of the reagent, creating a carbonium ion and an anionic group.

    Maybe the similar electronegativity between carbon and hydrogen prevents an adequate charge separation on the H-C bond?

    It's true that HCN is a very weak acid whereas HBr is strong.
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    (Original post by charco)
    The "why" would have to be conjecture. I know that HCN does not react with alkenyl groups.

    The first step in the mechanism is pi electrons moving to the partially positive atom of the reagent, creating a carbonium ion and an anionic group.

    Maybe the similar electronegativity between carbon and hydrogen prevents an adequate charge separation on the H-C bond?

    It's true that HCN is a very weak acid whereas HBr is strong.

    Well that doesn't make sense to me but I am happy that I know the fact HCN don't react with an alkene

    thanks, you helped a lot

    My Chemistry revision session ends here, Will do rest of work tomorrow

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    chemistry is my weakest subject and I need an A for my university offer....Any tips?
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