The Fenton reaction was tested under various pH and temperature conditions, and the absorbance curve of ferric thiocyanate after each trial was determined. This was done to determine the conditions in which Fe 2+ is most easily oxidized and the Fenton reaction occurs. Procedures and ideal times for the Fenton reaction were developed through previous research by Andrea Y. . After the reaction occurred, the products were mixed with KSCN in order for the iron(III) ions produced in the reaction to complex with the thiocyanate to form FeSCN 2+ . The absorption curve was determined through spectrophotometry and compared to the standard curve (Figure ) to determine the concentration of iron(III) produced.