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

  • question_answer
    The first order rate constant for the decomposition of \[{{N}_{2}}{{O}_{5}}\] is \[6.2\times {{10}^{-4}}{{\sec }^{-1}}\]. The half life period for this decomposition in seconds is [MNR 1991; MP PET 1997; UPSEAT 2000]

    A)                 1117.7  

    B)                 111.7

    C)                 223.4    

    D)                 160.9

    Correct Answer: A

    Solution :

                    \[{{t}_{1/2}}=\frac{0.693}{k}=\frac{0.693}{6.2\times {{10}^{-4}}}=1117.7\]sec.


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