• # 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

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