Question

In the reaction :
$A+2B\iff C+2D$ the Initial rate $\frac{-d\left[A\right]}{dt}$
at t = 0 was found to be $2.6\times {10}^{-2}Mse{c}^{-1}.$ What is the value of $\frac{-d\left[B\right]}{dt}$ at t = 0 in Msec${}^{-1}$?

• A. $2.6\times {10}^{-2}$
• B. $5.2\times {10}^{-2}$
• C. $0.1$
• D. $6.5\times {10}^{-3}$

Answer 1

The correct option is B $5.2\times {10}^{-2}$

$Rate=\frac{2d\left[A\right]}{dt}=-\frac{-d\left[B\right]}{dt}=2\times 2.6\times {10}^{-2}=5.2\times {10}^{-2}$