The phenol content of water downstream from a coking furnace was determined by coulometric analysis. A 100- mL sample was rendered slightly acidic, and an excess of KBr was introduced. To produce Br₂ for the reaction

a steady current of 0.0703 A for 5 minutes and 19 s was required. Express the results of this analysis in terms of parts of C₆H₅OH per million parts of water. (Assume that the density of water is 1.00 g/mL.)

Transcribed Image Text:

С,Н,ОН + 3Вr — BC,H,ОН () + 2HBr