$2 \mathrm{SO}_2(\mathrm{~g})+\mathrm{O}_2(\mathrm{~g}) \rightleftharpoons 2 \mathrm{SO}_3(\mathrm{~g})$
In an equilibrium mixture, the partial pressures are
$\mathrm{P}_{\mathrm{SO}_3}=43 \mathrm{kPa} ; \mathrm{Po}_{\mathrm{O}_2}=530 \mathrm{~Pa}$ and
$\mathrm{P}_{\mathrm{SO}_2}=45 \mathrm{kPa}$. The equilibrium constant
$K_P=$ $\_\_\_\_$ $\times 10^{-2}$. (Nearest integer) (if unit of $\mathrm{K}_{\mathrm{P}}$ is $\mathrm{Pa}^{-1}$ )