JIPMER Jipmer Medical Solved Paper-1998

  • question_answer
    Which of the following compounds will react with sodium?

    A)  \[{{C}_{2}}{{H}_{6}}\]   

    B)         \[{{C}_{2}}{{H}_{4}}\]                   

    C)  \[C{{H}_{3}}Cl\]              

    D)         \[{{C}_{2}}{{H}_{2}}\]

    Correct Answer: D

    Solution :

    With the increase in s-character of hybridisation of carbon, acidity also increase. Hence, acetylene (sp-hybrid) shows acidic character and reacts with sodium metal to give sodium acetalyde. \[H--C\equiv \equiv C--H+2Na\xrightarrow{{}}\] \[2N{{a}^{+}}{{(C\equiv \equiv C)}^{2-}}+{{H}_{2}}\uparrow \]


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