1. Pb (II) is soluble and dangerous to human health. Can hydrogen sulfide (H2S) immobilize it by reducing it to Pb0 (lead metal)? Suppose a water is at pH6.0 and has 1.0mMH2S,2.0mMSO42, and Pb (II) speciated as Pb2+ at the EPA limit of 15ppb(g/L). a. Find the value of pe for the reduction of sulfate (SO42) to hydrogen sulfide (H2S). b. Determine whether hydrogen sulfide can reduce Pb2+ under these conditions. c. Write a balanced, one-way reaction for the reduction of Pb2+ by H2S