The gas phase reaction proceeds in a batch reactor at $100C$ and $1$atm.

$A2B$

The time versus volume change data are obtained using pure A initially. Find reaction rate expression by using the data given below.

$\backslash$table$[[t,$min,$0,1,3,5,6,8,10,12,14],[\frac{V}{V_0},1\mathrm{.}0,1\mathrm{.}20,1\mathrm{.}48,1\mathrm{.}66,1\mathrm{.}72,1\mathrm{.}82,1\mathrm{.}88,1\mathrm{.}92,1\mathrm{.}95]]$