Question

In the following reaction ; $xA\to yB$
$lo{g}_{10}[-\frac{d\left[A\right]}{dt}]=lo{g}_{10}\left[\frac{d\left[B\right]}{dt}\right]+0.3010$

'A' and 'B' respectively can be :

• A. n-Butane and Iso-butane
• B. $C_2{H}_4$ and $C_4{H}_8$
• C. $N_2{O}_4$ and $N{O}_2$
• D. $C_2{H}_2$ and $C_6{H}_6$

Answer 1

The correct option is B $C_2{H}_4$ and $C_4{H}_8$

$log\frac{-d\left[A\right]}{dt}=log\frac{d\left[B\right]}{dt}+0.3010$

$\frac{-d\left[A\right]}{dt}=2\times \frac{d\left[B\right]}{dt}$

$\frac{1}{2}\times \frac{-d\left[A\right]}{dt}=\frac{d\left[B\right]}{dt}$

$2A\to B$

$2C_2{H}_4\to C_4{H}_8$