3. When sulfur dioxide in the air mixes with water it forms various acidic compounds and is responsible for the phenomenon known as acid rain. The amount of sulfur dioxide in the air can be determined by using a redox titration method. The unbalanced net chemical equation below shows the overall reaction involved in a titration with potassium permanganate. SO2(g) + MnO4-(aq) + H20(1) S042-(aq) + Mn2+(aq) + H+(aq) In one titration, 15.59 mL of standardized 0.00600 M KMnO4 were used to react with all the sulfur dioxide in a 5.00 liter sample of air. a. Write the half-reaction, including the electrons (e-), that shows the oxidation process that occurs in this reaction. b. Write the half-reaction, including the electrons (e-), that shows the reduction process that occurs in this reaction. c. Write the balanced net chemical equation for this reaction. d. Determine the density of sulfur dioxide (g/L) for this sample of air. e. Give one reason why acid rain is an environmental