Question

Decomposition of nitrogen pentoxide $N_2{O}_5$ in $C{Cl}_4$ is a ______ reaction

• A. Sequential
• B. First order
• C. Pseudo first order
• D. Parallel

Answer 1

The correct option is B First order

Decomposition of $N_2{O}_5$ to $N{O}_2$ and $O_2$ in $CC{l}_4$ solution is a first order reaction.

$N_2{O}_5\to 2N{O}_2+\frac{1}{2}{O}_2$

The rate of the reaction of decomposition of $N_2{O}_5$ is proportional to its concentration as follows -

$\frac{-d\left[N_2{O}_5\right]}{dt}=k\left[N_2{O}_5\right]$ where k is the rate constant.

So, the correct option is (B).