The pore waters of a wetland were sampled and the following were found: [ S ] T = 5.00 mg L 1 , pe = 4.9 , and pH = 6.00 . Calculate the concentrations of SO 4 2 and HS ( 20 pts ) 0.125 SO 4 2 ( aq ) + 1.125 H + ( aq ) + e = 0.125 HS ( aq ) + 0.5 H 2 O ( l ) logK red red = 4.3.