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

  • question_answer The velocity of the chemical reaction doubles every \[{{10}^{o}}C\] rise of temperature. If the temperature is raised by \[{{50}^{o}}C\], the velocity of the reaction increases to about

    A)                 32 times              

    B)                 16 times

    C)                 20 times              

    D)                 50 times

    Correct Answer: A

    Solution :

                    \[\frac{{{K}_{t}}+10}{{{K}_{t}}}=\frac{{{r}_{t}}+10}{{{r}_{t}}}=2\]; For an increase of temperature to \[{{50}^{o}}C\], i.e. 5 times, the rate increases by \[{{2}^{5}}\]times, i.e. 32 times.

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