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

  • question_answer
    A first order reaction which is 30% complete in   30 minutes has a half-life period of          [AIIMS 1998]

    A)                 24.2 min              

    B)                 58.2 min

    C)                 102.2 min            

    D)                 120.2 min

    Correct Answer: B

    Solution :

               \[k=\frac{2.303}{t}\log \frac{a}{a-x}\]                    \[\frac{0.693}{T}=\frac{2.303}{t}\log \frac{100}{100-30}\]                                 \[\therefore \,\,T=58.2\]min.


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