CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2010

  • question_answer
      In alkaline medium, alanine exists predominantly as  

    A)   anion                                    

    B)     Zwitterion  

    C)   cation                                   

    D)   covalent form

    Correct Answer: A

    Solution :

      In alkaline medium, alanine exists as anion. \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  COOH  \\  al\min e \end{smallmatrix}}{\mathop{C}}\,H-N{{H}_{2}}\xrightarrow[(pH>7)]{Basic\,\,medium}C{{H}_{3}}\underset{\begin{smallmatrix}  | \\  CO{{O}^{-}} \end{smallmatrix}}{\mathop{C}}\,H-N{{H}_{2}}\]


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