The Effect of the Concentration of an Acid, The Temperature of a Solution, and the Concentration of a Catalyst on the Reaction Time of Iron(III) Nitrate and Potassion Thiocyanate

The purpose of the experiment was to determine if the concentration of the acid (ferric nitrate), the concentration of the catalyst (potassium thiocyanate), and the temperature of the combined solution will affect the rate of the reaction. There were eight different combinations created using the highest and lowest concentrations of the acid and the catalyst, and the highest and lowest temperatures of the combined solution. There were three standards taken for each trial during the experiment. The standards consisted of the middle concentration of the acid, the middle concentration of the catalyst, and the middle temperature of the solution. The rate of the reaction was timed with a stopwatch and measured in seconds. The reaction was timed from when the two liquids first mixed to when the final solution was completely dark red. The reaction rate was recorded in the data table. After all the data was collected and interpreted, it was concluded that none of the three factors had any significant effect of the reaction rate of ferric nitrate and potassium thiocyanate.

Research Done By:

Lauren Leader
Sterling Heights High School

Sam Crow
Cousino High School