Question

If certain decomposition reaction found to obey equation in term of partial pressure (P) of reactant : $\frac{a-p^2}{p^2}=bkt$, what is order of reaction if a, b and k are constant (t represents time)?

• A. 3
• B. 6
• C. 2
• D. 4

Answer 1

The correct option is A 3

$\frac{a-p^2}{p^2}=bkt$
$\frac{a}{p^2}-1=bkt$
On differentiating
$-\frac{2a}{p^3}dp=bkdt$

$-\frac{dp}{dt}=\frac{bk}{2a}{p}^3$