JEE Main & Advanced Chemistry Chemical Kinetics Question Bank Rate of a reaction

  • question_answer The rate of a reaction is doubled for every \[{{10}^{o}}\] rise in temperature. The increase in reaction rate as a result of temperature rise from \[{{10}^{o}}\] to \[{{100}^{o}}\] is [KCET 1993; Kerala PET 2002; MP PET 2003]

    A)                 112        

    B)                 512

    C)                 400        

    D)                 614

    Correct Answer: B

    Solution :

               \[\frac{{{k}_{t}}+10}{{{K}_{t}}}=\frac{{{r}_{t}}+10}{{{r}_{t}}}=2\]                                 For an increase of temperature to \[{{90}^{o}}C\] i.e. 9 times, the rate increases by \[{{2}^{9}}\] times i.e. 512.

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