Chemistry - Concentration Terms Question with Solution | TestHub

The concentration of ${\mathrm{SO}}_2$ gas in air in autonagar of Vijayawada city is 0.12 PPM by volume and if all this ${\mathrm{SO}}_2$ causes acid rain then the ${\mathrm{P}}^{\mathrm{H}}$ of rain water is $\_\_\_\_$ if the following ionization (100%) takes place as ${\mathrm{H}}_2\mathrm{O}+{\mathrm{SO}}_2\rightleftharpoons {\mathrm{H}}^{\oplus }+{\mathrm{HSO}}_3^{\ominus }$