Question

If the concentration of the reactants in the reaction $2A+B\to C+D$ is increased by three folds, the rate of the reaction will be increased by:

• A. 27 times
• B. 9 times
• C. 64 times
• D. 01 times

Answer 1

The correct option is A 27 times

$r=k{\left[A\right]}^2\left[B\right]$

$r=k{\left[x\right]}^2\left[y\right]$

$r^{\prime }=k{\left[3x\right]}^2\left[3y\right]$

$r^{\prime }=27r$