Three different temperatures, 25°C, 35°C, and 45°C were tested in this experiment. The concentration of iron(III) was determined using the same method. The pH was held constant at a value of 3.0, each temperature was tested for a total of 3 trials, the absorbance values of FeSCN 2+ were converted to Fe 3+ Concentrations, which were then averaged across all 3 trials.