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Uttarakhand PMT Uttarakhand PMT Solved Paper-2005

  • question_answer
    The half-life of a reaction is halved as the initial concentration of the reactant is doubled. The order of the reaction is

    A)  0.5   

    B)  1      

    C)  2     

    D)  0

    Correct Answer: C

    Solution :

     Relation between half life time and concentration \[{{t}_{1/2}}\propto \frac{1}{{{a}^{n-1}}}\] then        \[{{t}_{1/2}}\propto \frac{1}{{{a}^{2-1}}}\] For second order reaction order of reaction \[n=2\] \[{{t}_{1/2}}\propto \frac{1}{a}\]


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