Question 11 Mark
For the reaction R → P, the concentration of a reactant changes from 0.03M to 0.02M in 25 minutes. Calculate the average rate of reaction using units of time both in minutes and seconds.
Answer
View full question & answer→Average rate of reaction
$=-\frac{\triangle[\text{R}]}{\triangle\text{t}}$
$=-\frac{[\text{R}]_2-[\text{R}]_1}{\text{t}_2-\text{t}_1}$
$=-\frac{0.02-0.03}{25}\text{M mim}^{-1}$
$=-\frac{-0.01}{25}\text{M mim}^{-1}$
$= 4 × 10^{-4}\ M\ min^{-1}$
$=\frac{4\times10^{-4}}{60}\text{M s}^{-1}$
$= 6.67 × 10^{-6}\ Ms^{-1}$
$=-\frac{\triangle[\text{R}]}{\triangle\text{t}}$
$=-\frac{[\text{R}]_2-[\text{R}]_1}{\text{t}_2-\text{t}_1}$
$=-\frac{0.02-0.03}{25}\text{M mim}^{-1}$
$=-\frac{-0.01}{25}\text{M mim}^{-1}$
$= 4 × 10^{-4}\ M\ min^{-1}$
$=\frac{4\times10^{-4}}{60}\text{M s}^{-1}$
$= 6.67 × 10^{-6}\ Ms^{-1}$