The SO2 present in air is mainly responsible for the phenomenon of acid rain. The
concentration of SO2 can be determined by titration against a permanganate solution of
known concentration as follows:
SO2 + MnO4^-1 -> SO4^-2 + Mn2+
Balance the equation showing all your working and calculate the mass of SO2 in asample of
air if 7.37mL of 0.008 M KMnO4 solution are required toreach the endpoint of the titration.