CMC Medical CMC-Medical Ludhiana Solved Paper-2010

  • question_answer
    Which of the following compounds reacts with, an aqueous solution of\[Ag{{(N{{H}_{2}})}_{2}}OH\]?

    A)  Ethane                                

    B)  Ethene

    C)  1-butyne           

    D)  2-butyne

    Correct Answer: C

    Solution :

                    Due to the acidic nature of the hydrogen atoms attached to a triple bonded carbon atoms, acetylene and terminal alkynes form metal acetylides. \[\underset{1-butyne}{\mathop{C{{H}_{3}}C{{H}_{2}}C\equiv CH}}\,+AgN{{O}_{3}}+N{{H}_{4}}OH\]           \[\to \underset{silver\,butylide}{\mathop{C{{H}_{3}}C{{H}_{2}}C\equiv CAg}}\,+N{{H}_{4}}N{{O}_{3}}+{{H}_{2}}O\]


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