Question

At the point of intersection of the two curves shown, the concentration of $\text{B}$ is given by________, for the first reaction $\text{A} \rightarrow nB.$

• A. $\frac{\text{n} \text{A}_{0}}{2}$
• B. $\frac{\text{A}_{0}}{\text{n - 1}}$
• C. $\frac{\text{n} \text{A}_{0}}{\text{n} + 1}$
• D. $\left(\frac{n-1}{n+1}\right) A_0$

Answer 1

Answer: (C)

According to question, at presentation point $\Rightarrow \left[\text{A}\right] = \left[\text{B}\right]$

$\Rightarrow A_0-x=n x $
$ \Rightarrow A_0=(n+1) x $
$ \Rightarrow x=\frac{A_0}{n+1} $
$ {[B]=n x} $
$ =\left(\frac{n \times A_0}{n+1}\right)$