Phenol, C6H5OH, can be determined by acoulometric titration with electrically generated bromine. The reaction (UNBALANCED) is
C6H5OH + 3Br2 → C6H3Br3+ 3Br-
Determine the phenol concentration of the wastewater in ppm. Provide your answer to two decimal places if a 280.00-mL sample of waste water took 47 min 37 sec for complete bromination of the phenol, at an average current of 60.41 mA.