Changing the temperature from 25°C to 35°C and 45℃ had little effect on the concentration of iron(III) and the effectiveness of the Fenton reaction (Figure ). The difference in concentrations of iron(III) produced from 25°C to 45℃ was 0.0050 mM, resulting in a percent increase of 28% (Figure ). This indicates that there is no significant increase that comes as a result of raising the temperature and the slight increase most likely stems from the increased rate of collision of reactants due to a higher kinetic energy in the 10 minute time frame. These results are consistent with previous research that indicates little change in efficiency of the Fenton reaction due to a temperature increase .