Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2006

  • question_answer
    Unit of first order rate constant is

    A)  \[mol\,\,L\,s\]

    B)  \[mo{{l}^{-1}}\,\,{{L}^{-1}}\,{{s}^{-1}}\]

    C)  \[mol\,\,{{L}^{-1}}\,{{s}^{-1}}\]

    D)  \[{{s}^{-1}},{{\min }^{-1}}etc.\]

    Correct Answer: D

    Solution :

    The unit of rate constant for nth order reaction is \[{{L}^{n-1}}\,\,mo{{l}^{1-n}}\,{{s}^{-1}}\] where, n = order of reaction For, 1st order reaction                   \[n=1\]                   \[\therefore \] Unit of k is \[{{s}^{-1}}\] or \[mi{{n}^{-1}}\]


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