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NEET Chemistry Chemical Kinetics / रासायनिक बलगतिकी Question Bank Self Evaluation Test - Chemical Kinetics

  • question_answer
    The half life period for catalytic decomposition of \[A{{B}_{3}}\] at 50 mm Hg is 4 hrs and at 100 mm Hg it is 2 hrs. The order of reaction is

    A) 1                                 

    B) 3   

    C) 2                                 

    D) 0

    Correct Answer: C

    Solution :

    [c] \[{{t}_{1/2}}\propto \frac{1}{{{(p)}^{n-1}}}\] where n is the order of reaction \[\frac{2}{4}={{\left( \frac{50}{100} \right)}^{n-1}}\,or\,\frac{1}{2}={{\left( \frac{1}{2} \right)}^{n-1}}\] \[n-1=1;n=2\]


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