JEE Main & Advanced Chemistry Chemical Kinetics / रासायनिक बलगतिकी Question Bank Rate law and Rate Constant

  • question_answer
    Which of the following expression is correct for first order reaction? \[(CO)\] refers to initial concentration of reactant [DCE 2000]

    A)                 \[{{t}_{1/2}}\propto CO\]            

    B)                 \[{{t}_{1/2}}\propto C{{O}^{-1}}\]

    C)                 \[{{t}_{1/2}}\propto C{{O}^{-2}}\]           

    D)                 \[{{t}_{1/2}}\propto C{{O}^{0}}\]

    Correct Answer: D

    Solution :

                    \[{{t}_{1/2}}\propto {{(CO)}^{o}}\] i.e. half life for Ist order is independent of initial concentration.


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