Question

For the following parallel chain reaction

If the sum of the concentration of B and C at any time is 2M then what will be [B] t and [C] t respectively?

• A. $\frac{11}{12}M\frac{13}{12}M$
• B. $\frac{3}{4}M\frac{5}{4}M$
• C. $\frac{4}{5}M,\frac{6}{5}M$
• D. $\frac{8}{13}M\frac{18}{13}M$

Answer 1

Answer: (D)

$\frac{8}{13}M\frac{18}{13}M$

Answer 2

$\lbrack B\rbrack\text{ + }\lbrack C\rbrack\text{ = 2 M}$$$\frac{\lbrack B\rbrack}{\lbrack C\rbrack} = \frac{2k_{1}}{3k_{2}} = \frac{4}{9}$$