CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2006

  • question_answer
    The amine which will not liberate nitrogen on reaction with nitrous acid is:

    A) Trimethyl amine

    B)        ethyl amine

    C) sec-butyl amine

    D)        c-butyl amine

    E) iso-propyl amine

    Correct Answer: A

    Solution :

    Trimethyl amine is a tertiary amine. It dissolve in cold nitrous acid to form salts which decompose on warming to nitrosoamine and alcohol. It will not liberate nitrogen. \[{{(C{{H}_{3}})}_{3}}N+HN{{O}_{2}}\xrightarrow{{}}\]                                                 \[\underset{trimethyl\text{ }ammonium\text{ }nitrite}{\mathop{{{[{{(C{{H}_{3}})}_{3}}NH]}^{+}}NO_{2}^{-}}}\,\]


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