$A+2 B ightarrow C+D$. If $-d[A] / d t=5 imes 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}

Question

$A+2 B ightarrow C+D$. If $-d[A] / d t=5 	imes 10^{-4} \mathrm{~mol} \mathrm{~L}^{-1} \mathrm{~s}^{-1}$, then $-d[B] / d t$ is

Professor PC Thomas Classes · Answer

Rate $= -\frac{d[A]}{dt} = -\frac{1}{2} \frac{d[B]}{dt} \Rightarrow -\frac{d[B]}{dt} = 2 	imes 5 	imes 10^{-4} = 10^{-3}$.